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Finding the Fourth Proportional to 611,061.08, 843,365.64 and 356,412.26

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Solution

The fourth proportional to 611,061.08, 843,365.64 and 356,412.26 is: 491,908.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,061.08 : 843,365.64 = 356,412.26 : x
  2. Step 2: Convert to fraction form
    611,061.08/843,365.64 = 356,412.26/x
  3. Step 3: Cross multiply
    611,061.08x = 843,365.64 × 356,412.26
  4. Step 4: Simplify right side
    611,061.08x = 300,585,853,758.75
  5. Step 5: Solve for x
    x = 300,585,853,758.75/611,061.08
  6. Step 6: Final answer
    x = 491,908.03

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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.