Home / 502,621.94-693,633.76-287,831.21

Finding the Fourth Proportional to 502,621.94, 693,633.76 and 287,831.21

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Solution

The fourth proportional to 502,621.94, 693,633.76 and 287,831.21 is: 397,215.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,621.94 : 693,633.76 = 287,831.21 : x
  2. Step 2: Convert to fraction form
    502,621.94/693,633.76 = 287,831.21/x
  3. Step 3: Cross multiply
    502,621.94x = 693,633.76 × 287,831.21
  4. Step 4: Simplify right side
    502,621.94x = 199,649,440,249.90
  5. Step 5: Solve for x
    x = 199,649,440,249.90/502,621.94
  6. Step 6: Final answer
    x = 397,215.93

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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.