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Finding the Fourth Proportional to 622,928.40, 935,429.40 and 342,646.80

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Solution

The fourth proportional to 622,928.40, 935,429.40 and 342,646.80 is: 514,540.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,928.40 : 935,429.40 = 342,646.80 : x
  2. Step 2: Convert to fraction form
    622,928.40/935,429.40 = 342,646.80/x
  3. Step 3: Cross multiply
    622,928.40x = 935,429.40 × 342,646.80
  4. Step 4: Simplify right side
    622,928.40x = 320,521,890,535.92
  5. Step 5: Solve for x
    x = 320,521,890,535.92/622,928.40
  6. Step 6: Final answer
    x = 514,540.50

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1.5x scale

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.