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Finding the Fourth Proportional to 629,468.74, 868,666.98 and 342,988.90

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Solution

The fourth proportional to 629,468.74, 868,666.98 and 342,988.90 is: 473,324.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,468.74 : 868,666.98 = 342,988.90 : x
  2. Step 2: Convert to fraction form
    629,468.74/868,666.98 = 342,988.90/x
  3. Step 3: Cross multiply
    629,468.74x = 868,666.98 × 342,988.90
  4. Step 4: Simplify right side
    629,468.74x = 297,943,131,936.52
  5. Step 5: Solve for x
    x = 297,943,131,936.52/629,468.74
  6. Step 6: Final answer
    x = 473,324.75

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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.