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Finding the Fourth Proportional to 906,708.88, 1,251,208.80 and 498,744.88

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Solution

The fourth proportional to 906,708.88, 1,251,208.80 and 498,744.88 is: 688,240.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,708.88 : 1,251,208.80 = 498,744.88 : x
  2. Step 2: Convert to fraction form
    906,708.88/1,251,208.80 = 498,744.88/x
  3. Step 3: Cross multiply
    906,708.88x = 1,251,208.80 × 498,744.88
  4. Step 4: Simplify right side
    906,708.88x = 624,033,982,810.94
  5. Step 5: Solve for x
    x = 624,033,982,810.94/906,708.88
  6. Step 6: Final answer
    x = 688,240.73

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1.5x scale

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.