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Finding the Fourth Proportional to 537,715.40, 742,712.10 and 394,248.20

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Solution

The fourth proportional to 537,715.40, 742,712.10 and 394,248.20 is: 544,549.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,715.40 : 742,712.10 = 394,248.20 : x
  2. Step 2: Convert to fraction form
    537,715.40/742,712.10 = 394,248.20/x
  3. Step 3: Cross multiply
    537,715.40x = 742,712.10 × 394,248.20
  4. Step 4: Simplify right side
    537,715.40x = 292,812,908,543.22
  5. Step 5: Solve for x
    x = 292,812,908,543.22/537,715.40
  6. Step 6: Final answer
    x = 544,549.98

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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.