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Finding the Fourth Proportional to 631,008.78, 946,572.69 and 489,013.11

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Solution

The fourth proportional to 631,008.78, 946,572.69 and 489,013.11 is: 733,565.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,008.78 : 946,572.69 = 489,013.11 : x
  2. Step 2: Convert to fraction form
    631,008.78/946,572.69 = 489,013.11/x
  3. Step 3: Cross multiply
    631,008.78x = 946,572.69 × 489,013.11
  4. Step 4: Simplify right side
    631,008.78x = 462,886,454,977.97
  5. Step 5: Solve for x
    x = 462,886,454,977.97/631,008.78
  6. Step 6: Final answer
    x = 733,565.79

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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.