Home / 502,974.90-693,983.86-319,146.45

Finding the Fourth Proportional to 502,974.90, 693,983.86 and 319,146.45

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Solution

The fourth proportional to 502,974.90, 693,983.86 and 319,146.45 is: 440,345.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,974.90 : 693,983.86 = 319,146.45 : x
  2. Step 2: Convert to fraction form
    502,974.90/693,983.86 = 319,146.45/x
  3. Step 3: Cross multiply
    502,974.90x = 693,983.86 × 319,146.45
  4. Step 4: Simplify right side
    502,974.90x = 221,482,485,276.30
  5. Step 5: Solve for x
    x = 221,482,485,276.30/502,974.90
  6. Step 6: Final answer
    x = 440,345.01

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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.