Home / 1,386,981.44-1,914,007.20-775,139.84

Finding the Fourth Proportional to 1,386,981.44, 1,914,007.20 and 775,139.84

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Solution

The fourth proportional to 1,386,981.44, 1,914,007.20 and 775,139.84 is: 1,069,677.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,981.44 : 1,914,007.20 = 775,139.84 : x
  2. Step 2: Convert to fraction form
    1,386,981.44/1,914,007.20 = 775,139.84/x
  3. Step 3: Cross multiply
    1,386,981.44x = 1,914,007.20 × 775,139.84
  4. Step 4: Simplify right side
    1,386,981.44x = 1,483,623,234,766.85
  5. Step 5: Solve for x
    x = 1,483,623,234,766.85/1,386,981.44
  6. Step 6: Final answer
    x = 1,069,677.79

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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.