Home / 887,404.20-1,331,981.10-438,631.80

Finding the Fourth Proportional to 887,404.20, 1,331,981.10 and 438,631.80

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Solution

The fourth proportional to 887,404.20, 1,331,981.10 and 438,631.80 is: 658,380.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,404.20 : 1,331,981.10 = 438,631.80 : x
  2. Step 2: Convert to fraction form
    887,404.20/1,331,981.10 = 438,631.80/x
  3. Step 3: Cross multiply
    887,404.20x = 1,331,981.10 × 438,631.80
  4. Step 4: Simplify right side
    887,404.20x = 584,249,267,458.98
  5. Step 5: Solve for x
    x = 584,249,267,458.98/887,404.20
  6. Step 6: Final answer
    x = 658,380.10

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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.