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Finding the Fourth Proportional to 611,497.80, 915,432.30 and 454,422.60

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Solution

The fourth proportional to 611,497.80, 915,432.30 and 454,422.60 is: 680,285.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,497.80 : 915,432.30 = 454,422.60 : x
  2. Step 2: Convert to fraction form
    611,497.80/915,432.30 = 454,422.60/x
  3. Step 3: Cross multiply
    611,497.80x = 915,432.30 × 454,422.60
  4. Step 4: Simplify right side
    611,497.80x = 415,993,125,889.98
  5. Step 5: Solve for x
    x = 415,993,125,889.98/611,497.80
  6. Step 6: Final answer
    x = 680,285.56

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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.