Home / 920,141.10-1,380,211.65-636,705.90

Finding the Fourth Proportional to 920,141.10, 1,380,211.65 and 636,705.90

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Solution

The fourth proportional to 920,141.10, 1,380,211.65 and 636,705.90 is: 955,058.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,141.10 : 1,380,211.65 = 636,705.90 : x
  2. Step 2: Convert to fraction form
    920,141.10/1,380,211.65 = 636,705.90/x
  3. Step 3: Cross multiply
    920,141.10x = 1,380,211.65 × 636,705.90
  4. Step 4: Simplify right side
    920,141.10x = 878,788,900,803.74
  5. Step 5: Solve for x
    x = 878,788,900,803.74/920,141.10
  6. Step 6: Final answer
    x = 955,058.85

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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.