Home / 492,414.52-679,584.28-288,636.66

Finding the Fourth Proportional to 492,414.52, 679,584.28 and 288,636.66

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Solution

The fourth proportional to 492,414.52, 679,584.28 and 288,636.66 is: 398,349.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,414.52 : 679,584.28 = 288,636.66 : x
  2. Step 2: Convert to fraction form
    492,414.52/679,584.28 = 288,636.66/x
  3. Step 3: Cross multiply
    492,414.52x = 679,584.28 × 288,636.66
  4. Step 4: Simplify right side
    492,414.52x = 196,152,933,497.67
  5. Step 5: Solve for x
    x = 196,152,933,497.67/492,414.52
  6. Step 6: Final answer
    x = 398,349.21

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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.