Home / 880,165.70-1,321,123.35-431,393.30

Finding the Fourth Proportional to 880,165.70, 1,321,123.35 and 431,393.30

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Solution

The fourth proportional to 880,165.70, 1,321,123.35 and 431,393.30 is: 647,518.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,165.70 : 1,321,123.35 = 431,393.30 : x
  2. Step 2: Convert to fraction form
    880,165.70/1,321,123.35 = 431,393.30/x
  3. Step 3: Cross multiply
    880,165.70x = 1,321,123.35 × 431,393.30
  4. Step 4: Simplify right side
    880,165.70x = 569,923,761,663.56
  5. Step 5: Solve for x
    x = 569,923,761,663.56/880,165.70
  6. Step 6: Final answer
    x = 647,518.71

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Double scale
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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.