Home / 787,431.20-1,181,146.80-486,937.40

Finding the Fourth Proportional to 787,431.20, 1,181,146.80 and 486,937.40

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Solution

The fourth proportional to 787,431.20, 1,181,146.80 and 486,937.40 is: 730,406.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,431.20 : 1,181,146.80 = 486,937.40 : x
  2. Step 2: Convert to fraction form
    787,431.20/1,181,146.80 = 486,937.40/x
  3. Step 3: Cross multiply
    787,431.20x = 1,181,146.80 × 486,937.40
  4. Step 4: Simplify right side
    787,431.20x = 575,144,551,810.32
  5. Step 5: Solve for x
    x = 575,144,551,810.32/787,431.20
  6. Step 6: Final answer
    x = 730,406.10

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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.