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Finding the Fourth Proportional to 452,707.80, 679,061.70 and 137,180.40

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Solution

The fourth proportional to 452,707.80, 679,061.70 and 137,180.40 is: 205,770.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,707.80 : 679,061.70 = 137,180.40 : x
  2. Step 2: Convert to fraction form
    452,707.80/679,061.70 = 137,180.40/x
  3. Step 3: Cross multiply
    452,707.80x = 679,061.70 × 137,180.40
  4. Step 4: Simplify right side
    452,707.80x = 93,153,955,630.68
  5. Step 5: Solve for x
    x = 93,153,955,630.68/452,707.80
  6. Step 6: Final answer
    x = 205,770.60

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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.