Home / 502,973.90-693,982.49-319,145.45

Finding the Fourth Proportional to 502,973.90, 693,982.49 and 319,145.45

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Solution

The fourth proportional to 502,973.90, 693,982.49 and 319,145.45 is: 440,343.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,973.90 : 693,982.49 = 319,145.45 : x
  2. Step 2: Convert to fraction form
    502,973.90/693,982.49 = 319,145.45/x
  3. Step 3: Cross multiply
    502,973.90x = 693,982.49 × 319,145.45
  4. Step 4: Simplify right side
    502,973.90x = 221,481,348,997.53
  5. Step 5: Solve for x
    x = 221,481,348,997.53/502,973.90
  6. Step 6: Final answer
    x = 440,343.62

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1.5x scale

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.