Home / 431,713.02-647,788.20-291,176.40

Finding the Fourth Proportional to 431,713.02, 647,788.20 and 291,176.40

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Solution

The fourth proportional to 431,713.02, 647,788.20 and 291,176.40 is: 436,912.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,713.02 : 647,788.20 = 291,176.40 : x
  2. Step 2: Convert to fraction form
    431,713.02/647,788.20 = 291,176.40/x
  3. Step 3: Cross multiply
    431,713.02x = 647,788.20 × 291,176.40
  4. Step 4: Simplify right side
    431,713.02x = 188,620,636,038.48
  5. Step 5: Solve for x
    x = 188,620,636,038.48/431,713.02
  6. Step 6: Final answer
    x = 436,912.09

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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.