Home / 717,386.20-990,037.71-395,096.22

Finding the Fourth Proportional to 717,386.20, 990,037.71 and 395,096.22

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Solution

The fourth proportional to 717,386.20, 990,037.71 and 395,096.22 is: 545,257.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,386.20 : 990,037.71 = 395,096.22 : x
  2. Step 2: Convert to fraction form
    717,386.20/990,037.71 = 395,096.22/x
  3. Step 3: Cross multiply
    717,386.20x = 990,037.71 × 395,096.22
  4. Step 4: Simplify right side
    717,386.20x = 391,160,152,916.01
  5. Step 5: Solve for x
    x = 391,160,152,916.01/717,386.20
  6. Step 6: Final answer
    x = 545,257.43

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.