Home / 1,221,375.63-1,685,700.50-677,686.57

Finding the Fourth Proportional to 1,221,375.63, 1,685,700.50 and 677,686.57

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Solution

The fourth proportional to 1,221,375.63, 1,685,700.50 and 677,686.57 is: 935,319.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,375.63 : 1,685,700.50 = 677,686.57 : x
  2. Step 2: Convert to fraction form
    1,221,375.63/1,685,700.50 = 677,686.57/x
  3. Step 3: Cross multiply
    1,221,375.63x = 1,685,700.50 × 677,686.57
  4. Step 4: Simplify right side
    1,221,375.63x = 1,142,376,589,892.28
  5. Step 5: Solve for x
    x = 1,142,376,589,892.28/1,221,375.63
  6. Step 6: Final answer
    x = 935,319.62

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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.