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Finding the Fourth Proportional to 870,998.41, 1,306,497 and 272,010.90

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Solution

The fourth proportional to 870,998.41, 1,306,497 and 272,010.90 is: 408,016.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,998.41 : 1,306,497 = 272,010.90 : x
  2. Step 2: Convert to fraction form
    870,998.41/1,306,497 = 272,010.90/x
  3. Step 3: Cross multiply
    870,998.41x = 1,306,497 × 272,010.90
  4. Step 4: Simplify right side
    870,998.41x = 355,381,424,817.30
  5. Step 5: Solve for x
    x = 355,381,424,817.30/870,998.41
  6. Step 6: Final answer
    x = 408,016.16

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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.