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Finding the Fourth Proportional to 708,934.28, 978,082.26 and 454,425.80

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Solution

The fourth proportional to 708,934.28, 978,082.26 and 454,425.80 is: 626,949.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,934.28 : 978,082.26 = 454,425.80 : x
  2. Step 2: Convert to fraction form
    708,934.28/978,082.26 = 454,425.80/x
  3. Step 3: Cross multiply
    708,934.28x = 978,082.26 × 454,425.80
  4. Step 4: Simplify right side
    708,934.28x = 444,465,813,466.31
  5. Step 5: Solve for x
    x = 444,465,813,466.31/708,934.28
  6. Step 6: Final answer
    x = 626,949.25

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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.