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Finding the Fourth Proportional to 667,971.36, 921,805.92 and 366,167.52

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Solution

The fourth proportional to 667,971.36, 921,805.92 and 366,167.52 is: 505,314.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,971.36 : 921,805.92 = 366,167.52 : x
  2. Step 2: Convert to fraction form
    667,971.36/921,805.92 = 366,167.52/x
  3. Step 3: Cross multiply
    667,971.36x = 921,805.92 × 366,167.52
  4. Step 4: Simplify right side
    667,971.36x = 337,535,387,647.72
  5. Step 5: Solve for x
    x = 337,535,387,647.72/667,971.36
  6. Step 6: Final answer
    x = 505,314.16

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1.5x scale

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.