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Finding the Fourth Proportional to 663,010.64, 914,960.98 and 376,532.81

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Solution

The fourth proportional to 663,010.64, 914,960.98 and 376,532.81 is: 519,618.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,010.64 : 914,960.98 = 376,532.81 : x
  2. Step 2: Convert to fraction form
    663,010.64/914,960.98 = 376,532.81/x
  3. Step 3: Cross multiply
    663,010.64x = 914,960.98 × 376,532.81
  4. Step 4: Simplify right side
    663,010.64x = 344,512,828,839.75
  5. Step 5: Solve for x
    x = 344,512,828,839.75/663,010.64
  6. Step 6: Final answer
    x = 519,618.85

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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.