Home / 915,560.40-1,372,951.80-442,390.80

Finding the Fourth Proportional to 915,560.40, 1,372,951.80 and 442,390.80

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Solution

The fourth proportional to 915,560.40, 1,372,951.80 and 442,390.80 is: 663,398.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,560.40 : 1,372,951.80 = 442,390.80 : x
  2. Step 2: Convert to fraction form
    915,560.40/1,372,951.80 = 442,390.80/x
  3. Step 3: Cross multiply
    915,560.40x = 1,372,951.80 × 442,390.80
  4. Step 4: Simplify right side
    915,560.40x = 607,381,245,163.44
  5. Step 5: Solve for x
    x = 607,381,245,163.44/915,560.40
  6. Step 6: Final answer
    x = 663,398.34

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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.