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Finding the Fourth Proportional to 712,691.87, 982,726.70 and 454,159.31

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Solution

The fourth proportional to 712,691.87, 982,726.70 and 454,159.31 is: 626,237.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,691.87 : 982,726.70 = 454,159.31 : x
  2. Step 2: Convert to fraction form
    712,691.87/982,726.70 = 454,159.31/x
  3. Step 3: Cross multiply
    712,691.87x = 982,726.70 × 454,159.31
  4. Step 4: Simplify right side
    712,691.87x = 446,314,472,806.15
  5. Step 5: Solve for x
    x = 446,314,472,806.15/712,691.87
  6. Step 6: Final answer
    x = 626,237.64

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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.