Home / 431,714.02-647,789.70-291,177.40

Finding the Fourth Proportional to 431,714.02, 647,789.70 and 291,177.40

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Solution

The fourth proportional to 431,714.02, 647,789.70 and 291,177.40 is: 436,913.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,714.02 : 647,789.70 = 291,177.40 : x
  2. Step 2: Convert to fraction form
    431,714.02/647,789.70 = 291,177.40/x
  3. Step 3: Cross multiply
    431,714.02x = 647,789.70 × 291,177.40
  4. Step 4: Simplify right side
    431,714.02x = 188,621,720,592.78
  5. Step 5: Solve for x
    x = 188,621,720,592.78/431,714.02
  6. Step 6: Final answer
    x = 436,913.59

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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.