Home / 724,208.46-1,086,312.69-386,225.13

Finding the Fourth Proportional to 724,208.46, 1,086,312.69 and 386,225.13

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Solution

The fourth proportional to 724,208.46, 1,086,312.69 and 386,225.13 is: 579,337.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,208.46 : 1,086,312.69 = 386,225.13 : x
  2. Step 2: Convert to fraction form
    724,208.46/1,086,312.69 = 386,225.13/x
  3. Step 3: Cross multiply
    724,208.46x = 1,086,312.69 × 386,225.13
  4. Step 4: Simplify right side
    724,208.46x = 419,561,259,915.90
  5. Step 5: Solve for x
    x = 419,561,259,915.90/724,208.46
  6. Step 6: Final answer
    x = 579,337.70

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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.