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Finding the Fourth Proportional to 412,445.60, 618,667.92 and 112,928.48

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Solution

The fourth proportional to 412,445.60, 618,667.92 and 112,928.48 is: 169,392.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,445.60 : 618,667.92 = 112,928.48 : x
  2. Step 2: Convert to fraction form
    412,445.60/618,667.92 = 112,928.48/x
  3. Step 3: Cross multiply
    412,445.60x = 618,667.92 × 112,928.48
  4. Step 4: Simplify right side
    412,445.60x = 69,865,227,830.36
  5. Step 5: Solve for x
    x = 69,865,227,830.36/412,445.60
  6. Step 6: Final answer
    x = 169,392.59

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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.