Home / 1,385,981.34-1,912,634.09-774,142.82

Finding the Fourth Proportional to 1,385,981.34, 1,912,634.09 and 774,142.82

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Solution

The fourth proportional to 1,385,981.34, 1,912,634.09 and 774,142.82 is: 1,068,305.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,981.34 : 1,912,634.09 = 774,142.82 : x
  2. Step 2: Convert to fraction form
    1,385,981.34/1,912,634.09 = 774,142.82/x
  3. Step 3: Cross multiply
    1,385,981.34x = 1,912,634.09 × 774,142.82
  4. Step 4: Simplify right side
    1,385,981.34x = 1,480,651,948,060.73
  5. Step 5: Solve for x
    x = 1,480,651,948,060.73/1,385,981.34
  6. Step 6: Final answer
    x = 1,068,305.83

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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.