Home / 644,060.80-966,091.20-329,132.80

Finding the Fourth Proportional to 644,060.80, 966,091.20 and 329,132.80

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Solution

The fourth proportional to 644,060.80, 966,091.20 and 329,132.80 is: 493,699.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,060.80 : 966,091.20 = 329,132.80 : x
  2. Step 2: Convert to fraction form
    644,060.80/966,091.20 = 329,132.80/x
  3. Step 3: Cross multiply
    644,060.80x = 966,091.20 × 329,132.80
  4. Step 4: Simplify right side
    644,060.80x = 317,972,301,711.36
  5. Step 5: Solve for x
    x = 317,972,301,711.36/644,060.80
  6. Step 6: Final answer
    x = 493,699.20

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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.