Home / 918,114.30-1,377,171.45-357,148.80

Finding the Fourth Proportional to 918,114.30, 1,377,171.45 and 357,148.80

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Solution

The fourth proportional to 918,114.30, 1,377,171.45 and 357,148.80 is: 535,723.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,114.30 : 1,377,171.45 = 357,148.80 : x
  2. Step 2: Convert to fraction form
    918,114.30/1,377,171.45 = 357,148.80/x
  3. Step 3: Cross multiply
    918,114.30x = 1,377,171.45 × 357,148.80
  4. Step 4: Simplify right side
    918,114.30x = 491,855,130,761.76
  5. Step 5: Solve for x
    x = 491,855,130,761.76/918,114.30
  6. Step 6: Final answer
    x = 535,723.20

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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.