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Finding the Fourth Proportional to 894,565.84, 1,234,490.70 and 666,144.76

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Solution

The fourth proportional to 894,565.84, 1,234,490.70 and 666,144.76 is: 919,272.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    894,565.84 : 1,234,490.70 = 666,144.76 : x
  2. Step 2: Convert to fraction form
    894,565.84/1,234,490.70 = 666,144.76/x
  3. Step 3: Cross multiply
    894,565.84x = 1,234,490.70 × 666,144.76
  4. Step 4: Simplify right side
    894,565.84x = 822,349,511,073.73
  5. Step 5: Solve for x
    x = 822,349,511,073.73/894,565.84
  6. Step 6: Final answer
    x = 919,272.20

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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.