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Finding the Fourth Proportional to 612,339.40, 845,025.78 and 344,067.40

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Solution

The fourth proportional to 612,339.40, 845,025.78 and 344,067.40 is: 474,811.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,339.40 : 845,025.78 = 344,067.40 : x
  2. Step 2: Convert to fraction form
    612,339.40/845,025.78 = 344,067.40/x
  3. Step 3: Cross multiply
    612,339.40x = 845,025.78 × 344,067.40
  4. Step 4: Simplify right side
    612,339.40x = 290,745,823,057.57
  5. Step 5: Solve for x
    x = 290,745,823,057.57/612,339.40
  6. Step 6: Final answer
    x = 474,811.56

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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.