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Finding the Fourth Proportional to 708,932.28, 978,079.50 and 454,423.80

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Solution

The fourth proportional to 708,932.28, 978,079.50 and 454,423.80 is: 626,946.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,932.28 : 978,079.50 = 454,423.80 : x
  2. Step 2: Convert to fraction form
    708,932.28/978,079.50 = 454,423.80/x
  3. Step 3: Cross multiply
    708,932.28x = 978,079.50 × 454,423.80
  4. Step 4: Simplify right side
    708,932.28x = 444,462,603,092.10
  5. Step 5: Solve for x
    x = 444,462,603,092.10/708,932.28
  6. Step 6: Final answer
    x = 626,946.49

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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.