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Finding the Fourth Proportional to 482,661.28, 663,710.61 and 418,888.36

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Solution

The fourth proportional to 482,661.28, 663,710.61 and 418,888.36 is: 576,016.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,661.28 : 663,710.61 = 418,888.36 : x
  2. Step 2: Convert to fraction form
    482,661.28/663,710.61 = 418,888.36/x
  3. Step 3: Cross multiply
    482,661.28x = 663,710.61 × 418,888.36
  4. Step 4: Simplify right side
    482,661.28x = 278,020,648,981.72
  5. Step 5: Solve for x
    x = 278,020,648,981.72/482,661.28
  6. Step 6: Final answer
    x = 576,016.06

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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.