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Finding the Fourth Proportional to 604,916.70, 907,375.05 and 392,340.30

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Solution

The fourth proportional to 604,916.70, 907,375.05 and 392,340.30 is: 588,510.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,916.70 : 907,375.05 = 392,340.30 : x
  2. Step 2: Convert to fraction form
    604,916.70/907,375.05 = 392,340.30/x
  3. Step 3: Cross multiply
    604,916.70x = 907,375.05 × 392,340.30
  4. Step 4: Simplify right side
    604,916.70x = 355,999,799,329.52
  5. Step 5: Solve for x
    x = 355,999,799,329.52/604,916.70
  6. Step 6: Final answer
    x = 588,510.45

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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.