Home / 868,793.30-1,302,239.55-307,538.90

Finding the Fourth Proportional to 868,793.30, 1,302,239.55 and 307,538.90

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Solution

The fourth proportional to 868,793.30, 1,302,239.55 and 307,538.90 is: 460,971.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,793.30 : 1,302,239.55 = 307,538.90 : x
  2. Step 2: Convert to fraction form
    868,793.30/1,302,239.55 = 307,538.90/x
  3. Step 3: Cross multiply
    868,793.30x = 1,302,239.55 × 307,538.90
  4. Step 4: Simplify right side
    868,793.30x = 400,489,318,743.50
  5. Step 5: Solve for x
    x = 400,489,318,743.50/868,793.30
  6. Step 6: Final answer
    x = 460,971.92

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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.