Home / 905,901.78-1,250,159.88-498,020.58

Finding the Fourth Proportional to 905,901.78, 1,250,159.88 and 498,020.58

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Solution

The fourth proportional to 905,901.78, 1,250,159.88 and 498,020.58 is: 687,276.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,901.78 : 1,250,159.88 = 498,020.58 : x
  2. Step 2: Convert to fraction form
    905,901.78/1,250,159.88 = 498,020.58/x
  3. Step 3: Cross multiply
    905,901.78x = 1,250,159.88 × 498,020.58
  4. Step 4: Simplify right side
    905,901.78x = 622,605,348,530.33
  5. Step 5: Solve for x
    x = 622,605,348,530.33/905,901.78
  6. Step 6: Final answer
    x = 687,276.88

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Double scale
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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.