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Finding the Fourth Proportional to 870,952.92, 1,201,884.16 and 488,995.80

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Solution

The fourth proportional to 870,952.92, 1,201,884.16 and 488,995.80 is: 674,796.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,952.92 : 1,201,884.16 = 488,995.80 : x
  2. Step 2: Convert to fraction form
    870,952.92/1,201,884.16 = 488,995.80/x
  3. Step 3: Cross multiply
    870,952.92x = 1,201,884.16 × 488,995.80
  4. Step 4: Simplify right side
    870,952.92x = 587,716,306,326.53
  5. Step 5: Solve for x
    x = 587,716,306,326.53/870,952.92
  6. Step 6: Final answer
    x = 674,796.87

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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.