Home / 1,118,820.60-1,678,230.90-320,149.80

Finding the Fourth Proportional to 1,118,820.60, 1,678,230.90 and 320,149.80

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Solution

The fourth proportional to 1,118,820.60, 1,678,230.90 and 320,149.80 is: 480,224.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,820.60 : 1,678,230.90 = 320,149.80 : x
  2. Step 2: Convert to fraction form
    1,118,820.60/1,678,230.90 = 320,149.80/x
  3. Step 3: Cross multiply
    1,118,820.60x = 1,678,230.90 × 320,149.80
  4. Step 4: Simplify right side
    1,118,820.60x = 537,285,286,988.82
  5. Step 5: Solve for x
    x = 537,285,286,988.82/1,118,820.60
  6. Step 6: Final answer
    x = 480,224.70

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Double scale
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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.