Home / 485,034.78-723,758.82-434,601.12

Finding the Fourth Proportional to 485,034.78, 723,758.82 and 434,601.12

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Solution

The fourth proportional to 485,034.78, 723,758.82 and 434,601.12 is: 648,502.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,034.78 : 723,758.82 = 434,601.12 : x
  2. Step 2: Convert to fraction form
    485,034.78/723,758.82 = 434,601.12/x
  3. Step 3: Cross multiply
    485,034.78x = 723,758.82 × 434,601.12
  4. Step 4: Simplify right side
    485,034.78x = 314,546,393,781.88
  5. Step 5: Solve for x
    x = 314,546,393,781.88/485,034.78
  6. Step 6: Final answer
    x = 648,502.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.