Home / 1,289,664,656.80-1,934,496,985.20-320,316,272.80

Finding the Fourth Proportional to 1,289,664,656.80, 1,934,496,985.20 and 320,316,272.80

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Solution

The fourth proportional to 1,289,664,656.80, 1,934,496,985.20 and 320,316,272.80 is: 480,474,409.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,664,656.80 : 1,934,496,985.20 = 320,316,272.80 : x
  2. Step 2: Convert to fraction form
    1,289,664,656.80/1,934,496,985.20 = 320,316,272.80/x
  3. Step 3: Cross multiply
    1,289,664,656.80x = 1,934,496,985.20 × 320,316,272.80
  4. Step 4: Simplify right side
    1,289,664,656.80x = 619,650,864,042,100,864
  5. Step 5: Solve for x
    x = 619,650,864,042,100,864/1,289,664,656.80
  6. Step 6: Final answer
    x = 480,474,409.20

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Half scale
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Double scale
Find fourth proportional to 1,289,664,657.80, 1,934,496,986.70 and 320,316,273.80
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.