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Finding the Fourth Proportional to 659,201.98, 987,785.26 and 445,130.93

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Solution

The fourth proportional to 659,201.98, 987,785.26 and 445,130.93 is: 667,009.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,201.98 : 987,785.26 = 445,130.93 : x
  2. Step 2: Convert to fraction form
    659,201.98/987,785.26 = 445,130.93/x
  3. Step 3: Cross multiply
    659,201.98x = 987,785.26 × 445,130.93
  4. Step 4: Simplify right side
    659,201.98x = 439,693,771,424.09
  5. Step 5: Solve for x
    x = 439,693,771,424.09/659,201.98
  6. Step 6: Final answer
    x = 667,009.18

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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.