Home / 758,128.83-1,046,190.38-418,589.79

Finding the Fourth Proportional to 758,128.83, 1,046,190.38 and 418,589.79

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Solution

The fourth proportional to 758,128.83, 1,046,190.38 and 418,589.79 is: 577,638.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,128.83 : 1,046,190.38 = 418,589.79 : x
  2. Step 2: Convert to fraction form
    758,128.83/1,046,190.38 = 418,589.79/x
  3. Step 3: Cross multiply
    758,128.83x = 1,046,190.38 × 418,589.79
  4. Step 4: Simplify right side
    758,128.83x = 437,924,609,371.27
  5. Step 5: Solve for x
    x = 437,924,609,371.27/758,128.83
  6. Step 6: Final answer
    x = 577,638.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.