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Finding the Fourth Proportional to 612,833.32, 845,294.58 and 397,588.84

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Solution

The fourth proportional to 612,833.32, 845,294.58 and 397,588.84 is: 548,403.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,833.32 : 845,294.58 = 397,588.84 : x
  2. Step 2: Convert to fraction form
    612,833.32/845,294.58 = 397,588.84/x
  3. Step 3: Cross multiply
    612,833.32x = 845,294.58 × 397,588.84
  4. Step 4: Simplify right side
    612,833.32x = 336,079,691,520.49
  5. Step 5: Solve for x
    x = 336,079,691,520.49/612,833.32
  6. Step 6: Final answer
    x = 548,403.10

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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.