Home / 880,123.20-1,321,059.60-431,350.80

Finding the Fourth Proportional to 880,123.20, 1,321,059.60 and 431,350.80

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Solution

The fourth proportional to 880,123.20, 1,321,059.60 and 431,350.80 is: 647,454.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,123.20 : 1,321,059.60 = 431,350.80 : x
  2. Step 2: Convert to fraction form
    880,123.20/1,321,059.60 = 431,350.80/x
  3. Step 3: Cross multiply
    880,123.20x = 1,321,059.60 × 431,350.80
  4. Step 4: Simplify right side
    880,123.20x = 569,840,115,307.68
  5. Step 5: Solve for x
    x = 569,840,115,307.68/880,123.20
  6. Step 6: Final answer
    x = 647,454.94

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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.