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Finding the Fourth Proportional to 610,928.88, 843,041.34 and 338,979.53

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Solution

The fourth proportional to 610,928.88, 843,041.34 and 338,979.53 is: 467,769.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,928.88 : 843,041.34 = 338,979.53 : x
  2. Step 2: Convert to fraction form
    610,928.88/843,041.34 = 338,979.53/x
  3. Step 3: Cross multiply
    610,928.88x = 843,041.34 × 338,979.53
  4. Step 4: Simplify right side
    610,928.88x = 285,773,760,264.75
  5. Step 5: Solve for x
    x = 285,773,760,264.75/610,928.88
  6. Step 6: Final answer
    x = 467,769.28

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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.