Home / 887,515.20-1,331,272.80-389,851.20

Finding the Fourth Proportional to 887,515.20, 1,331,272.80 and 389,851.20

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Solution

The fourth proportional to 887,515.20, 1,331,272.80 and 389,851.20 is: 584,776.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,515.20 : 1,331,272.80 = 389,851.20 : x
  2. Step 2: Convert to fraction form
    887,515.20/1,331,272.80 = 389,851.20/x
  3. Step 3: Cross multiply
    887,515.20x = 1,331,272.80 × 389,851.20
  4. Step 4: Simplify right side
    887,515.20x = 518,998,298,607.36
  5. Step 5: Solve for x
    x = 518,998,298,607.36/887,515.20
  6. Step 6: Final answer
    x = 584,776.80

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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.