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Finding the Fourth Proportional to 611,115.31, 843,332.75 and 339,185.55

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Solution

The fourth proportional to 611,115.31, 843,332.75 and 339,185.55 is: 468,072.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,115.31 : 843,332.75 = 339,185.55 : x
  2. Step 2: Convert to fraction form
    611,115.31/843,332.75 = 339,185.55/x
  3. Step 3: Cross multiply
    611,115.31x = 843,332.75 × 339,185.55
  4. Step 4: Simplify right side
    611,115.31x = 286,046,284,439.34
  5. Step 5: Solve for x
    x = 286,046,284,439.34/611,115.31
  6. Step 6: Final answer
    x = 468,072.52

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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.