Home / 1,003,385.90-1,504,438.38-661,434.68

Finding the Fourth Proportional to 1,003,385.90, 1,504,438.38 and 661,434.68

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Solution

The fourth proportional to 1,003,385.90, 1,504,438.38 and 661,434.68 is: 991,729.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,003,385.90 : 1,504,438.38 = 661,434.68 : x
  2. Step 2: Convert to fraction form
    1,003,385.90/1,504,438.38 = 661,434.68/x
  3. Step 3: Cross multiply
    1,003,385.90x = 1,504,438.38 × 661,434.68
  4. Step 4: Simplify right side
    1,003,385.90x = 995,087,710,932.83
  5. Step 5: Solve for x
    x = 995,087,710,932.83/1,003,385.90
  6. Step 6: Final answer
    x = 991,729.82

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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.