Home / 724,281.30-1,085,989.95-443,999.70

Finding the Fourth Proportional to 724,281.30, 1,085,989.95 and 443,999.70

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Solution

The fourth proportional to 724,281.30, 1,085,989.95 and 443,999.70 is: 665,734.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,281.30 : 1,085,989.95 = 443,999.70 : x
  2. Step 2: Convert to fraction form
    724,281.30/1,085,989.95 = 443,999.70/x
  3. Step 3: Cross multiply
    724,281.30x = 1,085,989.95 × 443,999.70
  4. Step 4: Simplify right side
    724,281.30x = 482,179,212,003.02
  5. Step 5: Solve for x
    x = 482,179,212,003.02/724,281.30
  6. Step 6: Final answer
    x = 665,734.72

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Double scale
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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.