Home / 1,521,143.15-2,278,434.62-1,431,711.86

Finding the Fourth Proportional to 1,521,143.15, 2,278,434.62 and 1,431,711.86

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Solution

The fourth proportional to 1,521,143.15, 2,278,434.62 and 1,431,711.86 is: 2,144,480.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521,143.15 : 2,278,434.62 = 1,431,711.86 : x
  2. Step 2: Convert to fraction form
    1,521,143.15/2,278,434.62 = 1,431,711.86/x
  3. Step 3: Cross multiply
    1,521,143.15x = 2,278,434.62 × 1,431,711.86
  4. Step 4: Simplify right side
    1,521,143.15x = 3,262,061,859,875.70
  5. Step 5: Solve for x
    x = 3,262,061,859,875.70/1,521,143.15
  6. Step 6: Final answer
    x = 2,144,480.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.