Home / 880,129.20-1,321,068.60-431,356.80

Finding the Fourth Proportional to 880,129.20, 1,321,068.60 and 431,356.80

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Solution

The fourth proportional to 880,129.20, 1,321,068.60 and 431,356.80 is: 647,463.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,129.20 : 1,321,068.60 = 431,356.80 : x
  2. Step 2: Convert to fraction form
    880,129.20/1,321,068.60 = 431,356.80/x
  3. Step 3: Cross multiply
    880,129.20x = 1,321,068.60 × 431,356.80
  4. Step 4: Simplify right side
    880,129.20x = 569,851,923,876.48
  5. Step 5: Solve for x
    x = 569,851,923,876.48/880,129.20
  6. Step 6: Final answer
    x = 647,463.94

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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.