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Finding the Fourth Proportional to 489,527.70, 734,291.55 and 279,186.90

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Solution

The fourth proportional to 489,527.70, 734,291.55 and 279,186.90 is: 418,780.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,527.70 : 734,291.55 = 279,186.90 : x
  2. Step 2: Convert to fraction form
    489,527.70/734,291.55 = 279,186.90/x
  3. Step 3: Cross multiply
    489,527.70x = 734,291.55 × 279,186.90
  4. Step 4: Simplify right side
    489,527.70x = 205,004,581,540.70
  5. Step 5: Solve for x
    x = 205,004,581,540.70/489,527.70
  6. Step 6: Final answer
    x = 418,780.35

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Similar ratio
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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.