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Finding the Fourth Proportional to 644,490.84, 966,502.98 and 307,517.88

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Solution

The fourth proportional to 644,490.84, 966,502.98 and 307,517.88 is: 461,165.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,490.84 : 966,502.98 = 307,517.88 : x
  2. Step 2: Convert to fraction form
    644,490.84/966,502.98 = 307,517.88/x
  3. Step 3: Cross multiply
    644,490.84x = 966,502.98 × 307,517.88
  4. Step 4: Simplify right side
    644,490.84x = 297,216,947,423.28
  5. Step 5: Solve for x
    x = 297,216,947,423.28/644,490.84
  6. Step 6: Final answer
    x = 461,165.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.