Home / 1,221,385.80-1,685,522.52-677,557.20

Finding the Fourth Proportional to 1,221,385.80, 1,685,522.52 and 677,557.20

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Solution

The fourth proportional to 1,221,385.80, 1,685,522.52 and 677,557.20 is: 935,034.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,385.80 : 1,685,522.52 = 677,557.20 : x
  2. Step 2: Convert to fraction form
    1,221,385.80/1,685,522.52 = 677,557.20/x
  3. Step 3: Cross multiply
    1,221,385.80x = 1,685,522.52 × 677,557.20
  4. Step 4: Simplify right side
    1,221,385.80x = 1,142,037,919,188.14
  5. Step 5: Solve for x
    x = 1,142,037,919,188.14/1,221,385.80
  6. Step 6: Final answer
    x = 935,034.55

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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.