Home / 906,102.20-1,359,590.70-639,288.20

Finding the Fourth Proportional to 906,102.20, 1,359,590.70 and 639,288.20

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Solution

The fourth proportional to 906,102.20, 1,359,590.70 and 639,288.20 is: 959,240.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,102.20 : 1,359,590.70 = 639,288.20 : x
  2. Step 2: Convert to fraction form
    906,102.20/1,359,590.70 = 639,288.20/x
  3. Step 3: Cross multiply
    906,102.20x = 1,359,590.70 × 639,288.20
  4. Step 4: Simplify right side
    906,102.20x = 869,170,291,339.74
  5. Step 5: Solve for x
    x = 869,170,291,339.74/906,102.20
  6. Step 6: Final answer
    x = 959,240.90

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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.