Home / 771,103.80-1,156,598.10-321,708.60

Finding the Fourth Proportional to 771,103.80, 1,156,598.10 and 321,708.60

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Solution

The fourth proportional to 771,103.80, 1,156,598.10 and 321,708.60 is: 482,538.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,103.80 : 1,156,598.10 = 321,708.60 : x
  2. Step 2: Convert to fraction form
    771,103.80/1,156,598.10 = 321,708.60/x
  3. Step 3: Cross multiply
    771,103.80x = 1,156,598.10 × 321,708.60
  4. Step 4: Simplify right side
    771,103.80x = 372,087,555,513.66
  5. Step 5: Solve for x
    x = 372,087,555,513.66/771,103.80
  6. Step 6: Final answer
    x = 482,538.87

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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.