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Finding the Fourth Proportional to 698,744.25, 964,301.28 and 392,916.91

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Solution

The fourth proportional to 698,744.25, 964,301.28 and 392,916.91 is: 542,244.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,744.25 : 964,301.28 = 392,916.91 : x
  2. Step 2: Convert to fraction form
    698,744.25/964,301.28 = 392,916.91/x
  3. Step 3: Cross multiply
    698,744.25x = 964,301.28 × 392,916.91
  4. Step 4: Simplify right side
    698,744.25x = 378,890,272,460.55
  5. Step 5: Solve for x
    x = 378,890,272,460.55/698,744.25
  6. Step 6: Final answer
    x = 542,244.57

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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.