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Finding the Fourth Proportional to 675,902.28, 932,640.74 and 389,366.28

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Solution

The fourth proportional to 675,902.28, 932,640.74 and 389,366.28 is: 537,265.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,902.28 : 932,640.74 = 389,366.28 : x
  2. Step 2: Convert to fraction form
    675,902.28/932,640.74 = 389,366.28/x
  3. Step 3: Cross multiply
    675,902.28x = 932,640.74 × 389,366.28
  4. Step 4: Simplify right side
    675,902.28x = 363,138,855,510.25
  5. Step 5: Solve for x
    x = 363,138,855,510.25/675,902.28
  6. Step 6: Final answer
    x = 537,265.32

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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.