Home / 484,976.82-669,149.98-319,387.69

Finding the Fourth Proportional to 484,976.82, 669,149.98 and 319,387.69

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Solution

The fourth proportional to 484,976.82, 669,149.98 and 319,387.69 is: 440,677.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,976.82 : 669,149.98 = 319,387.69 : x
  2. Step 2: Convert to fraction form
    484,976.82/669,149.98 = 319,387.69/x
  3. Step 3: Cross multiply
    484,976.82x = 669,149.98 × 319,387.69
  4. Step 4: Simplify right side
    484,976.82x = 213,718,264,569.26
  5. Step 5: Solve for x
    x = 213,718,264,569.26/484,976.82
  6. Step 6: Final answer
    x = 440,677.28

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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.