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Finding the Fourth Proportional to 573,436.19, 791,359.17 and 315,299.79

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Solution

The fourth proportional to 573,436.19, 791,359.17 and 315,299.79 is: 435,123.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,436.19 : 791,359.17 = 315,299.79 : x
  2. Step 2: Convert to fraction form
    573,436.19/791,359.17 = 315,299.79/x
  3. Step 3: Cross multiply
    573,436.19x = 791,359.17 × 315,299.79
  4. Step 4: Simplify right side
    573,436.19x = 249,515,378,933.20
  5. Step 5: Solve for x
    x = 249,515,378,933.20/573,436.19
  6. Step 6: Final answer
    x = 435,123.18

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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.