Home / 491,001.24-677,480.10-287,012.70

Finding the Fourth Proportional to 491,001.24, 677,480.10 and 287,012.70

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Solution

The fourth proportional to 491,001.24, 677,480.10 and 287,012.70 is: 396,018.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,001.24 : 677,480.10 = 287,012.70 : x
  2. Step 2: Convert to fraction form
    491,001.24/677,480.10 = 287,012.70/x
  3. Step 3: Cross multiply
    491,001.24x = 677,480.10 × 287,012.70
  4. Step 4: Simplify right side
    491,001.24x = 194,445,392,697.27
  5. Step 5: Solve for x
    x = 194,445,392,697.27/491,001.24
  6. Step 6: Final answer
    x = 396,018.13

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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.