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Finding the Fourth Proportional to 548,052.20, 821,300.70 and 404,779.40

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Solution

The fourth proportional to 548,052.20, 821,300.70 and 404,779.40 is: 606,594.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,052.20 : 821,300.70 = 404,779.40 : x
  2. Step 2: Convert to fraction form
    548,052.20/821,300.70 = 404,779.40/x
  3. Step 3: Cross multiply
    548,052.20x = 821,300.70 × 404,779.40
  4. Step 4: Simplify right side
    548,052.20x = 332,445,604,565.58
  5. Step 5: Solve for x
    x = 332,445,604,565.58/548,052.20
  6. Step 6: Final answer
    x = 606,594.78

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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.