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Finding the Fourth Proportional to 610,478.88, 915,873.92 and 189,758.40

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Solution

The fourth proportional to 610,478.88, 915,873.92 and 189,758.40 is: 284,685.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,478.88 : 915,873.92 = 189,758.40 : x
  2. Step 2: Convert to fraction form
    610,478.88/915,873.92 = 189,758.40/x
  3. Step 3: Cross multiply
    610,478.88x = 915,873.92 × 189,758.40
  4. Step 4: Simplify right side
    610,478.88x = 173,794,769,660.93
  5. Step 5: Solve for x
    x = 173,794,769,660.93/610,478.88
  6. Step 6: Final answer
    x = 284,685.97

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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.