Home / 1,274,981.62-1,912,013.15-421,895.80

Finding the Fourth Proportional to 1,274,981.62, 1,912,013.15 and 421,895.80

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Solution

The fourth proportional to 1,274,981.62, 1,912,013.15 and 421,895.80 is: 632,691.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274,981.62 : 1,912,013.15 = 421,895.80 : x
  2. Step 2: Convert to fraction form
    1,274,981.62/1,912,013.15 = 421,895.80/x
  3. Step 3: Cross multiply
    1,274,981.62x = 1,912,013.15 × 421,895.80
  4. Step 4: Simplify right side
    1,274,981.62x = 806,670,317,529.77
  5. Step 5: Solve for x
    x = 806,670,317,529.77/1,274,981.62
  6. Step 6: Final answer
    x = 632,691.72

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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.