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Finding the Fourth Proportional to 1,368,768, 2,053,129.34 and 409,225.80

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Solution

The fourth proportional to 1,368,768, 2,053,129.34 and 409,225.80 is: 613,831.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368,768 : 2,053,129.34 = 409,225.80 : x
  2. Step 2: Convert to fraction form
    1,368,768/2,053,129.34 = 409,225.80/x
  3. Step 3: Cross multiply
    1,368,768x = 2,053,129.34 × 409,225.80
  4. Step 4: Simplify right side
    1,368,768x = 840,193,496,664.97
  5. Step 5: Solve for x
    x = 840,193,496,664.97/1,368,768
  6. Step 6: Final answer
    x = 613,831.93

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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.