Home / 920,136.10-1,380,204.15-636,700.90

Finding the Fourth Proportional to 920,136.10, 1,380,204.15 and 636,700.90

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Solution

The fourth proportional to 920,136.10, 1,380,204.15 and 636,700.90 is: 955,051.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,136.10 : 1,380,204.15 = 636,700.90 : x
  2. Step 2: Convert to fraction form
    920,136.10/1,380,204.15 = 636,700.90/x
  3. Step 3: Cross multiply
    920,136.10x = 1,380,204.15 × 636,700.90
  4. Step 4: Simplify right side
    920,136.10x = 878,777,224,488.74
  5. Step 5: Solve for x
    x = 878,777,224,488.74/920,136.10
  6. Step 6: Final answer
    x = 955,051.35

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Half scale
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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.