Home / 1,221,375.50-1,685,700.33-677,686.45

Finding the Fourth Proportional to 1,221,375.50, 1,685,700.33 and 677,686.45

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Solution

The fourth proportional to 1,221,375.50, 1,685,700.33 and 677,686.45 is: 935,319.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,375.50 : 1,685,700.33 = 677,686.45 : x
  2. Step 2: Convert to fraction form
    1,221,375.50/1,685,700.33 = 677,686.45/x
  3. Step 3: Cross multiply
    1,221,375.50x = 1,685,700.33 × 677,686.45
  4. Step 4: Simplify right side
    1,221,375.50x = 1,142,376,265,645.95
  5. Step 5: Solve for x
    x = 1,142,376,265,645.95/1,221,375.50
  6. Step 6: Final answer
    x = 935,319.45

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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.