Home / 688,519.20-1,032,260.40-288,832.80

Finding the Fourth Proportional to 688,519.20, 1,032,260.40 and 288,832.80

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Solution

The fourth proportional to 688,519.20, 1,032,260.40 and 288,832.80 is: 433,031.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,519.20 : 1,032,260.40 = 288,832.80 : x
  2. Step 2: Convert to fraction form
    688,519.20/1,032,260.40 = 288,832.80/x
  3. Step 3: Cross multiply
    688,519.20x = 1,032,260.40 × 288,832.80
  4. Step 4: Simplify right side
    688,519.20x = 298,150,661,661.12
  5. Step 5: Solve for x
    x = 298,150,661,661.12/688,519.20
  6. Step 6: Final answer
    x = 433,031.73

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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.