Home / 887,467.20-1,331,200.80-389,803.20

Finding the Fourth Proportional to 887,467.20, 1,331,200.80 and 389,803.20

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Solution

The fourth proportional to 887,467.20, 1,331,200.80 and 389,803.20 is: 584,704.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,467.20 : 1,331,200.80 = 389,803.20 : x
  2. Step 2: Convert to fraction form
    887,467.20/1,331,200.80 = 389,803.20/x
  3. Step 3: Cross multiply
    887,467.20x = 1,331,200.80 × 389,803.20
  4. Step 4: Simplify right side
    887,467.20x = 518,906,331,682.56
  5. Step 5: Solve for x
    x = 518,906,331,682.56/887,467.20
  6. Step 6: Final answer
    x = 584,704.80

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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.