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Finding the Fourth Proportional to 667,798.80, 921,557.16 and 365,992.08

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Solution

The fourth proportional to 667,798.80, 921,557.16 and 365,992.08 is: 505,066.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,798.80 : 921,557.16 = 365,992.08 : x
  2. Step 2: Convert to fraction form
    667,798.80/921,557.16 = 365,992.08/x
  3. Step 3: Cross multiply
    667,798.80x = 921,557.16 × 365,992.08
  4. Step 4: Simplify right side
    667,798.80x = 337,282,621,827.29
  5. Step 5: Solve for x
    x = 337,282,621,827.29/667,798.80
  6. Step 6: Final answer
    x = 505,066.23

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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.