Home / 878,589.21-1,317,518.76-429,179.61

Finding the Fourth Proportional to 878,589.21, 1,317,518.76 and 429,179.61

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Solution

The fourth proportional to 878,589.21, 1,317,518.76 and 429,179.61 is: 643,591.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,589.21 : 1,317,518.76 = 429,179.61 : x
  2. Step 2: Convert to fraction form
    878,589.21/1,317,518.76 = 429,179.61/x
  3. Step 3: Cross multiply
    878,589.21x = 1,317,518.76 × 429,179.61
  4. Step 4: Simplify right side
    878,589.21x = 565,452,187,584.48
  5. Step 5: Solve for x
    x = 565,452,187,584.48/878,589.21
  6. Step 6: Final answer
    x = 643,591.09

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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.