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Finding the Fourth Proportional to 906,908.70, 1,361,410.65 and 487,004.70

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Solution

The fourth proportional to 906,908.70, 1,361,410.65 and 487,004.70 is: 731,069.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,908.70 : 1,361,410.65 = 487,004.70 : x
  2. Step 2: Convert to fraction form
    906,908.70/1,361,410.65 = 487,004.70/x
  3. Step 3: Cross multiply
    906,908.70x = 1,361,410.65 × 487,004.70
  4. Step 4: Simplify right side
    906,908.70x = 663,013,385,180.06
  5. Step 5: Solve for x
    x = 663,013,385,180.06/906,908.70
  6. Step 6: Final answer
    x = 731,069.61

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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.