Home / 1,380,580.80-2,071,166.88-781,824.96

Finding the Fourth Proportional to 1,380,580.80, 2,071,166.88 and 781,824.96

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Solution

The fourth proportional to 1,380,580.80, 2,071,166.88 and 781,824.96 is: 1,172,904.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,580.80 : 2,071,166.88 = 781,824.96 : x
  2. Step 2: Convert to fraction form
    1,380,580.80/2,071,166.88 = 781,824.96/x
  3. Step 3: Cross multiply
    1,380,580.80x = 2,071,166.88 × 781,824.96
  4. Step 4: Simplify right side
    1,380,580.80x = 1,619,289,963,109.32
  5. Step 5: Solve for x
    x = 1,619,289,963,109.32/1,380,580.80
  6. Step 6: Final answer
    x = 1,172,904.88

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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.