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Finding the Fourth Proportional to 432,003.80, 647,130.90 and 299,034.20

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Solution

The fourth proportional to 432,003.80, 647,130.90 and 299,034.20 is: 447,945.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,003.80 : 647,130.90 = 299,034.20 : x
  2. Step 2: Convert to fraction form
    432,003.80/647,130.90 = 299,034.20/x
  3. Step 3: Cross multiply
    432,003.80x = 647,130.90 × 299,034.20
  4. Step 4: Simplify right side
    432,003.80x = 193,514,270,976.78
  5. Step 5: Solve for x
    x = 193,514,270,976.78/432,003.80
  6. Step 6: Final answer
    x = 447,945.76

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1.5x scale

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.