Home / 753,115.80-1,129,673.70-454,517.40

Finding the Fourth Proportional to 753,115.80, 1,129,673.70 and 454,517.40

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Solution

The fourth proportional to 753,115.80, 1,129,673.70 and 454,517.40 is: 681,776.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,115.80 : 1,129,673.70 = 454,517.40 : x
  2. Step 2: Convert to fraction form
    753,115.80/1,129,673.70 = 454,517.40/x
  3. Step 3: Cross multiply
    753,115.80x = 1,129,673.70 × 454,517.40
  4. Step 4: Simplify right side
    753,115.80x = 513,456,352,972.38
  5. Step 5: Solve for x
    x = 513,456,352,972.38/753,115.80
  6. Step 6: Final answer
    x = 681,776.10

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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.