Home / 815,436.80-1,223,155.20-496,572.20

Finding the Fourth Proportional to 815,436.80, 1,223,155.20 and 496,572.20

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Solution

The fourth proportional to 815,436.80, 1,223,155.20 and 496,572.20 is: 744,858.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,436.80 : 1,223,155.20 = 496,572.20 : x
  2. Step 2: Convert to fraction form
    815,436.80/1,223,155.20 = 496,572.20/x
  3. Step 3: Cross multiply
    815,436.80x = 1,223,155.20 × 496,572.20
  4. Step 4: Simplify right side
    815,436.80x = 607,384,868,605.44
  5. Step 5: Solve for x
    x = 607,384,868,605.44/815,436.80
  6. Step 6: Final answer
    x = 744,858.30

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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.