Home / 765,121.21-1,147,821.92-315,596.85

Finding the Fourth Proportional to 765,121.21, 1,147,821.92 and 315,596.85

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Solution

The fourth proportional to 765,121.21, 1,147,821.92 and 315,596.85 is: 473,453.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,121.21 : 1,147,821.92 = 315,596.85 : x
  2. Step 2: Convert to fraction form
    765,121.21/1,147,821.92 = 315,596.85/x
  3. Step 3: Cross multiply
    765,121.21x = 1,147,821.92 × 315,596.85
  4. Step 4: Simplify right side
    765,121.21x = 362,248,982,312.95
  5. Step 5: Solve for x
    x = 362,248,982,312.95/765,121.21
  6. Step 6: Final answer
    x = 473,453.07

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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.