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Finding the Fourth Proportional to 906,005, 1,250,287.70 and 498,113.78

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Solution

The fourth proportional to 906,005, 1,250,287.70 and 498,113.78 is: 687,397.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,005 : 1,250,287.70 = 498,113.78 : x
  2. Step 2: Convert to fraction form
    906,005/1,250,287.70 = 498,113.78/x
  3. Step 3: Cross multiply
    906,005x = 1,250,287.70 × 498,113.78
  4. Step 4: Simplify right side
    906,005x = 622,785,532,334.51
  5. Step 5: Solve for x
    x = 622,785,532,334.51/906,005
  6. Step 6: Final answer
    x = 687,397.46

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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.