Home / 918,136.80-1,377,205.20-357,171.30

Finding the Fourth Proportional to 918,136.80, 1,377,205.20 and 357,171.30

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Solution

The fourth proportional to 918,136.80, 1,377,205.20 and 357,171.30 is: 535,756.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,136.80 : 1,377,205.20 = 357,171.30 : x
  2. Step 2: Convert to fraction form
    918,136.80/1,377,205.20 = 357,171.30/x
  3. Step 3: Cross multiply
    918,136.80x = 1,377,205.20 × 357,171.30
  4. Step 4: Simplify right side
    918,136.80x = 491,898,171,650.76
  5. Step 5: Solve for x
    x = 491,898,171,650.76/918,136.80
  6. Step 6: Final answer
    x = 535,756.95

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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.