Home / 906,354.70-1,359,969.45-639,540.70

Finding the Fourth Proportional to 906,354.70, 1,359,969.45 and 639,540.70

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Solution

The fourth proportional to 906,354.70, 1,359,969.45 and 639,540.70 is: 959,619.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,354.70 : 1,359,969.45 = 639,540.70 : x
  2. Step 2: Convert to fraction form
    906,354.70/1,359,969.45 = 639,540.70/x
  3. Step 3: Cross multiply
    906,354.70x = 1,359,969.45 × 639,540.70
  4. Step 4: Simplify right side
    906,354.70x = 869,755,814,031.62
  5. Step 5: Solve for x
    x = 869,755,814,031.62/906,354.70
  6. Step 6: Final answer
    x = 959,619.69

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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.