Home / 768,640.46-1,153,660.39-409,113.18

Finding the Fourth Proportional to 768,640.46, 1,153,660.39 and 409,113.18

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Solution

The fourth proportional to 768,640.46, 1,153,660.39 and 409,113.18 is: 614,042.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,640.46 : 1,153,660.39 = 409,113.18 : x
  2. Step 2: Convert to fraction form
    768,640.46/1,153,660.39 = 409,113.18/x
  3. Step 3: Cross multiply
    768,640.46x = 1,153,660.39 × 409,113.18
  4. Step 4: Simplify right side
    768,640.46x = 471,977,669,770.16
  5. Step 5: Solve for x
    x = 471,977,669,770.16/768,640.46
  6. Step 6: Final answer
    x = 614,042.19

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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.