Home / 1,207,741.80-1,666,665-663,865.95

Finding the Fourth Proportional to 1,207,741.80, 1,666,665 and 663,865.95

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Solution

The fourth proportional to 1,207,741.80, 1,666,665 and 663,865.95 is: 916,124.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,741.80 : 1,666,665 = 663,865.95 : x
  2. Step 2: Convert to fraction form
    1,207,741.80/1,666,665 = 663,865.95/x
  3. Step 3: Cross multiply
    1,207,741.80x = 1,666,665 × 663,865.95
  4. Step 4: Simplify right side
    1,207,741.80x = 1,106,442,143,556.75
  5. Step 5: Solve for x
    x = 1,106,442,143,556.75/1,207,741.80
  6. Step 6: Final answer
    x = 916,124.74

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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.