Home / 724,438.80-1,086,658.20-545,979.60

Finding the Fourth Proportional to 724,438.80, 1,086,658.20 and 545,979.60

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Solution

The fourth proportional to 724,438.80, 1,086,658.20 and 545,979.60 is: 818,969.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,438.80 : 1,086,658.20 = 545,979.60 : x
  2. Step 2: Convert to fraction form
    724,438.80/1,086,658.20 = 545,979.60/x
  3. Step 3: Cross multiply
    724,438.80x = 1,086,658.20 × 545,979.60
  4. Step 4: Simplify right side
    724,438.80x = 593,293,209,372.72
  5. Step 5: Solve for x
    x = 593,293,209,372.72/724,438.80
  6. Step 6: Final answer
    x = 818,969.40

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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.