Home / 718,815.60-1,078,223.40-220,114.80

Finding the Fourth Proportional to 718,815.60, 1,078,223.40 and 220,114.80

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Solution

The fourth proportional to 718,815.60, 1,078,223.40 and 220,114.80 is: 330,172.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,815.60 : 1,078,223.40 = 220,114.80 : x
  2. Step 2: Convert to fraction form
    718,815.60/1,078,223.40 = 220,114.80/x
  3. Step 3: Cross multiply
    718,815.60x = 1,078,223.40 × 220,114.80
  4. Step 4: Simplify right side
    718,815.60x = 237,332,928,046.32
  5. Step 5: Solve for x
    x = 237,332,928,046.32/718,815.60
  6. Step 6: Final answer
    x = 330,172.20

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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.