Home / 831,651.91-1,247,031.52-426,677.25

Finding the Fourth Proportional to 831,651.91, 1,247,031.52 and 426,677.25

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Solution

The fourth proportional to 831,651.91, 1,247,031.52 and 426,677.25 is: 639,786.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,651.91 : 1,247,031.52 = 426,677.25 : x
  2. Step 2: Convert to fraction form
    831,651.91/1,247,031.52 = 426,677.25/x
  3. Step 3: Cross multiply
    831,651.91x = 1,247,031.52 × 426,677.25
  4. Step 4: Simplify right side
    831,651.91x = 532,079,983,226.60
  5. Step 5: Solve for x
    x = 532,079,983,226.60/831,651.91
  6. Step 6: Final answer
    x = 639,786.88

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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.