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Finding the Fourth Proportional to 622,994.40, 935,528.40 and 342,712.80

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Solution

The fourth proportional to 622,994.40, 935,528.40 and 342,712.80 is: 514,639.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,994.40 : 935,528.40 = 342,712.80 : x
  2. Step 2: Convert to fraction form
    622,994.40/935,528.40 = 342,712.80/x
  3. Step 3: Cross multiply
    622,994.40x = 935,528.40 × 342,712.80
  4. Step 4: Simplify right side
    622,994.40x = 320,617,557,443.52
  5. Step 5: Solve for x
    x = 320,617,557,443.52/622,994.40
  6. Step 6: Final answer
    x = 514,639.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.