Home / 728,069.40-1,092,104.10-307,819.80

Finding the Fourth Proportional to 728,069.40, 1,092,104.10 and 307,819.80

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Solution

The fourth proportional to 728,069.40, 1,092,104.10 and 307,819.80 is: 461,729.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,069.40 : 1,092,104.10 = 307,819.80 : x
  2. Step 2: Convert to fraction form
    728,069.40/1,092,104.10 = 307,819.80/x
  3. Step 3: Cross multiply
    728,069.40x = 1,092,104.10 × 307,819.80
  4. Step 4: Simplify right side
    728,069.40x = 336,171,265,641.18
  5. Step 5: Solve for x
    x = 336,171,265,641.18/728,069.40
  6. Step 6: Final answer
    x = 461,729.70

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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.