Home / 921,046.85-1,380,377.90-636,283.05

Finding the Fourth Proportional to 921,046.85, 1,380,377.90 and 636,283.05

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Solution

The fourth proportional to 921,046.85, 1,380,377.90 and 636,283.05 is: 953,600.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,046.85 : 1,380,377.90 = 636,283.05 : x
  2. Step 2: Convert to fraction form
    921,046.85/1,380,377.90 = 636,283.05/x
  3. Step 3: Cross multiply
    921,046.85x = 1,380,377.90 × 636,283.05
  4. Step 4: Simplify right side
    921,046.85x = 878,311,056,778.89
  5. Step 5: Solve for x
    x = 878,311,056,778.89/921,046.85
  6. Step 6: Final answer
    x = 953,600.85

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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.