Home / 1,387,555.56-1,914,679.76-775,643.90

Finding the Fourth Proportional to 1,387,555.56, 1,914,679.76 and 775,643.90

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Solution

The fourth proportional to 1,387,555.56, 1,914,679.76 and 775,643.90 is: 1,070,306.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,555.56 : 1,914,679.76 = 775,643.90 : x
  2. Step 2: Convert to fraction form
    1,387,555.56/1,914,679.76 = 775,643.90/x
  3. Step 3: Cross multiply
    1,387,555.56x = 1,914,679.76 × 775,643.90
  4. Step 4: Simplify right side
    1,387,555.56x = 1,485,109,662,845.85
  5. Step 5: Solve for x
    x = 1,485,109,662,845.85/1,387,555.56
  6. Step 6: Final answer
    x = 1,070,306.45

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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.