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Finding the Fourth Proportional to 489,773.40, 734,660.10 and 427,565.40

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Solution

The fourth proportional to 489,773.40, 734,660.10 and 427,565.40 is: 641,348.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,773.40 : 734,660.10 = 427,565.40 : x
  2. Step 2: Convert to fraction form
    489,773.40/734,660.10 = 427,565.40/x
  3. Step 3: Cross multiply
    489,773.40x = 734,660.10 × 427,565.40
  4. Step 4: Simplify right side
    489,773.40x = 314,115,239,520.54
  5. Step 5: Solve for x
    x = 314,115,239,520.54/489,773.40
  6. Step 6: Final answer
    x = 641,348.10

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Similar ratio
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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.