Home / 918,100.80-1,377,151.20-357,135.30

Finding the Fourth Proportional to 918,100.80, 1,377,151.20 and 357,135.30

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Solution

The fourth proportional to 918,100.80, 1,377,151.20 and 357,135.30 is: 535,702.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,100.80 : 1,377,151.20 = 357,135.30 : x
  2. Step 2: Convert to fraction form
    918,100.80/1,377,151.20 = 357,135.30/x
  3. Step 3: Cross multiply
    918,100.80x = 1,377,151.20 × 357,135.30
  4. Step 4: Simplify right side
    918,100.80x = 491,829,306,957.36
  5. Step 5: Solve for x
    x = 491,829,306,957.36/918,100.80
  6. Step 6: Final answer
    x = 535,702.95

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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.