Home / 492,257.15-679,376.73-288,385.86

Finding the Fourth Proportional to 492,257.15, 679,376.73 and 288,385.86

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Solution

The fourth proportional to 492,257.15, 679,376.73 and 288,385.86 is: 398,008.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,257.15 : 679,376.73 = 288,385.86 : x
  2. Step 2: Convert to fraction form
    492,257.15/679,376.73 = 288,385.86/x
  3. Step 3: Cross multiply
    492,257.15x = 679,376.73 × 288,385.86
  4. Step 4: Simplify right side
    492,257.15x = 195,922,642,545.04
  5. Step 5: Solve for x
    x = 195,922,642,545.04/492,257.15
  6. Step 6: Final answer
    x = 398,008.73

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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.