Home / 868,899.85-1,303,347.17-220,474.78

Finding the Fourth Proportional to 868,899.85, 1,303,347.17 and 220,474.78

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Solution

The fourth proportional to 868,899.85, 1,303,347.17 and 220,474.78 is: 330,711.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,899.85 : 1,303,347.17 = 220,474.78 : x
  2. Step 2: Convert to fraction form
    868,899.85/1,303,347.17 = 220,474.78/x
  3. Step 3: Cross multiply
    868,899.85x = 1,303,347.17 × 220,474.78
  4. Step 4: Simplify right side
    868,899.85x = 287,355,177,862.19
  5. Step 5: Solve for x
    x = 287,355,177,862.19/868,899.85
  6. Step 6: Final answer
    x = 330,711.51

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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.