Home / 724,286.80-1,086,430.20-351,038.80

Finding the Fourth Proportional to 724,286.80, 1,086,430.20 and 351,038.80

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Solution

The fourth proportional to 724,286.80, 1,086,430.20 and 351,038.80 is: 526,558.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,286.80 : 1,086,430.20 = 351,038.80 : x
  2. Step 2: Convert to fraction form
    724,286.80/1,086,430.20 = 351,038.80/x
  3. Step 3: Cross multiply
    724,286.80x = 1,086,430.20 × 351,038.80
  4. Step 4: Simplify right side
    724,286.80x = 381,379,153,691.76
  5. Step 5: Solve for x
    x = 381,379,153,691.76/724,286.80
  6. Step 6: Final answer
    x = 526,558.20

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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.