Home / 687,235.20-1,031,630.40-406,910.40

Finding the Fourth Proportional to 687,235.20, 1,031,630.40 and 406,910.40

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Solution

The fourth proportional to 687,235.20, 1,031,630.40 and 406,910.40 is: 610,826.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,235.20 : 1,031,630.40 = 406,910.40 : x
  2. Step 2: Convert to fraction form
    687,235.20/1,031,630.40 = 406,910.40/x
  3. Step 3: Cross multiply
    687,235.20x = 1,031,630.40 × 406,910.40
  4. Step 4: Simplify right side
    687,235.20x = 419,781,138,716.16
  5. Step 5: Solve for x
    x = 419,781,138,716.16/687,235.20
  6. Step 6: Final answer
    x = 610,826.02

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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.