Home / 743,421.76-1,114,964.52-343,843.28

Finding the Fourth Proportional to 743,421.76, 1,114,964.52 and 343,843.28

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Solution

The fourth proportional to 743,421.76, 1,114,964.52 and 343,843.28 is: 515,687.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,421.76 : 1,114,964.52 = 343,843.28 : x
  2. Step 2: Convert to fraction form
    743,421.76/1,114,964.52 = 343,843.28/x
  3. Step 3: Cross multiply
    743,421.76x = 1,114,964.52 × 343,843.28
  4. Step 4: Simplify right side
    743,421.76x = 383,373,057,640.43
  5. Step 5: Solve for x
    x = 383,373,057,640.43/743,421.76
  6. Step 6: Final answer
    x = 515,687.16

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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.