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Finding the Fourth Proportional to 981,995.95, 1,472,995.73 and 308,129.01

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Solution

The fourth proportional to 981,995.95, 1,472,995.73 and 308,129.01 is: 462,194.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,995.95 : 1,472,995.73 = 308,129.01 : x
  2. Step 2: Convert to fraction form
    981,995.95/1,472,995.73 = 308,129.01/x
  3. Step 3: Cross multiply
    981,995.95x = 1,472,995.73 × 308,129.01
  4. Step 4: Simplify right side
    981,995.95x = 453,872,716,019.13
  5. Step 5: Solve for x
    x = 453,872,716,019.13/981,995.95
  6. Step 6: Final answer
    x = 462,194.08

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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.