Home / 787,429.20-1,181,143.80-486,935.40

Finding the Fourth Proportional to 787,429.20, 1,181,143.80 and 486,935.40

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Solution

The fourth proportional to 787,429.20, 1,181,143.80 and 486,935.40 is: 730,403.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,429.20 : 1,181,143.80 = 486,935.40 : x
  2. Step 2: Convert to fraction form
    787,429.20/1,181,143.80 = 486,935.40/x
  3. Step 3: Cross multiply
    787,429.20x = 1,181,143.80 × 486,935.40
  4. Step 4: Simplify right side
    787,429.20x = 575,140,728,710.52
  5. Step 5: Solve for x
    x = 575,140,728,710.52/787,429.20
  6. Step 6: Final answer
    x = 730,403.10

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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.