Home / 502,977.40-693,987.31-319,148.95

Finding the Fourth Proportional to 502,977.40, 693,987.31 and 319,148.95

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Solution

The fourth proportional to 502,977.40, 693,987.31 and 319,148.95 is: 440,348.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,977.40 : 693,987.31 = 319,148.95 : x
  2. Step 2: Convert to fraction form
    502,977.40/693,987.31 = 319,148.95/x
  3. Step 3: Cross multiply
    502,977.40x = 693,987.31 × 319,148.95
  4. Step 4: Simplify right side
    502,977.40x = 221,485,321,299.83
  5. Step 5: Solve for x
    x = 221,485,321,299.83/502,977.40
  6. Step 6: Final answer
    x = 440,348.46

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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.