Home / 771,463.30-1,157,379.72-321,934.10

Finding the Fourth Proportional to 771,463.30, 1,157,379.72 and 321,934.10

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Solution

The fourth proportional to 771,463.30, 1,157,379.72 and 321,934.10 is: 482,978.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,463.30 : 1,157,379.72 = 321,934.10 : x
  2. Step 2: Convert to fraction form
    771,463.30/1,157,379.72 = 321,934.10/x
  3. Step 3: Cross multiply
    771,463.30x = 1,157,379.72 × 321,934.10
  4. Step 4: Simplify right side
    771,463.30x = 372,599,998,516.45
  5. Step 5: Solve for x
    x = 372,599,998,516.45/771,463.30
  6. Step 6: Final answer
    x = 482,978.26

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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.