Home / 918,134.60-1,377,201.90-386,256.20

Finding the Fourth Proportional to 918,134.60, 1,377,201.90 and 386,256.20

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Solution

The fourth proportional to 918,134.60, 1,377,201.90 and 386,256.20 is: 579,384.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,134.60 : 1,377,201.90 = 386,256.20 : x
  2. Step 2: Convert to fraction form
    918,134.60/1,377,201.90 = 386,256.20/x
  3. Step 3: Cross multiply
    918,134.60x = 1,377,201.90 × 386,256.20
  4. Step 4: Simplify right side
    918,134.60x = 531,952,772,526.78
  5. Step 5: Solve for x
    x = 531,952,772,526.78/918,134.60
  6. Step 6: Final answer
    x = 579,384.30

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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.