Home / 1,048,403,999.30-1,572,605,998.95-640,257,311.30

Finding the Fourth Proportional to 1,048,403,999.30, 1,572,605,998.95 and 640,257,311.30

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Solution

The fourth proportional to 1,048,403,999.30, 1,572,605,998.95 and 640,257,311.30 is: 960,385,966.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048,403,999.30 : 1,572,605,998.95 = 640,257,311.30 : x
  2. Step 2: Convert to fraction form
    1,048,403,999.30/1,572,605,998.95 = 640,257,311.30/x
  3. Step 3: Cross multiply
    1,048,403,999.30x = 1,572,605,998.95 × 640,257,311.30
  4. Step 4: Simplify right side
    1,048,403,999.30x = 1,006,872,488,621,977,600
  5. Step 5: Solve for x
    x = 1,006,872,488,621,977,600/1,048,403,999.30
  6. Step 6: Final answer
    x = 960,385,966.95

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Double scale
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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.