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Finding the Fourth Proportional to 489,626.73, 734,355.45 and 129,799.89

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Solution

The fourth proportional to 489,626.73, 734,355.45 and 129,799.89 is: 194,677.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,626.73 : 734,355.45 = 129,799.89 : x
  2. Step 2: Convert to fraction form
    489,626.73/734,355.45 = 129,799.89/x
  3. Step 3: Cross multiply
    489,626.73x = 734,355.45 × 129,799.89
  4. Step 4: Simplify right side
    489,626.73x = 95,319,256,630.90
  5. Step 5: Solve for x
    x = 95,319,256,630.90/489,626.73
  6. Step 6: Final answer
    x = 194,677.40

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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.