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Finding the Fourth Proportional to 899,321.32, 1,349,448.54 and 400,568.68

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Solution

The fourth proportional to 899,321.32, 1,349,448.54 and 400,568.68 is: 601,060.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,321.32 : 1,349,448.54 = 400,568.68 : x
  2. Step 2: Convert to fraction form
    899,321.32/1,349,448.54 = 400,568.68/x
  3. Step 3: Cross multiply
    899,321.32x = 1,349,448.54 × 400,568.68
  4. Step 4: Simplify right side
    899,321.32x = 540,546,820,395.73
  5. Step 5: Solve for x
    x = 540,546,820,395.73/899,321.32
  6. Step 6: Final answer
    x = 601,060.83

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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.