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Finding the Fourth Proportional to 610,645.92, 915,971.31 and 255,410.79

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Solution

The fourth proportional to 610,645.92, 915,971.31 and 255,410.79 is: 383,117.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,645.92 : 915,971.31 = 255,410.79 : x
  2. Step 2: Convert to fraction form
    610,645.92/915,971.31 = 255,410.79/x
  3. Step 3: Cross multiply
    610,645.92x = 915,971.31 × 255,410.79
  4. Step 4: Simplify right side
    610,645.92x = 233,948,955,904.44
  5. Step 5: Solve for x
    x = 233,948,955,904.44/610,645.92
  6. Step 6: Final answer
    x = 383,117.20

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1.5x scale

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.