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Finding the Fourth Proportional to 663,432.05, 994,558.73 and 258,530.53

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Solution

The fourth proportional to 663,432.05, 994,558.73 and 258,530.53 is: 387,566.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,432.05 : 994,558.73 = 258,530.53 : x
  2. Step 2: Convert to fraction form
    663,432.05/994,558.73 = 258,530.53/x
  3. Step 3: Cross multiply
    663,432.05x = 994,558.73 × 258,530.53
  4. Step 4: Simplify right side
    663,432.05x = 257,123,789,963.91
  5. Step 5: Solve for x
    x = 257,123,789,963.91/663,432.05
  6. Step 6: Final answer
    x = 387,566.13

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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.