Home / 699,478.80-1,049,218.20-486,902.40

Finding the Fourth Proportional to 699,478.80, 1,049,218.20 and 486,902.40

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Solution

The fourth proportional to 699,478.80, 1,049,218.20 and 486,902.40 is: 730,353.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,478.80 : 1,049,218.20 = 486,902.40 : x
  2. Step 2: Convert to fraction form
    699,478.80/1,049,218.20 = 486,902.40/x
  3. Step 3: Cross multiply
    699,478.80x = 1,049,218.20 × 486,902.40
  4. Step 4: Simplify right side
    699,478.80x = 510,866,859,703.68
  5. Step 5: Solve for x
    x = 510,866,859,703.68/699,478.80
  6. Step 6: Final answer
    x = 730,353.60

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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.