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Finding the Fourth Proportional to 611,367.07, 843,708.27 and 339,439.25

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Solution

The fourth proportional to 611,367.07, 843,708.27 and 339,439.25 is: 468,438.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,367.07 : 843,708.27 = 339,439.25 : x
  2. Step 2: Convert to fraction form
    611,367.07/843,708.27 = 339,439.25/x
  3. Step 3: Cross multiply
    611,367.07x = 843,708.27 × 339,439.25
  4. Step 4: Simplify right side
    611,367.07x = 286,387,702,387.60
  5. Step 5: Solve for x
    x = 286,387,702,387.60/611,367.07
  6. Step 6: Final answer
    x = 468,438.22

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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.