Home / 12,879,520.80-19,319,281.20-3,902,906.40

Finding the Fourth Proportional to 12,879,520.80, 19,319,281.20 and 3,902,906.40

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Solution

The fourth proportional to 12,879,520.80, 19,319,281.20 and 3,902,906.40 is: 5,854,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879,520.80 : 19,319,281.20 = 3,902,906.40 : x
  2. Step 2: Convert to fraction form
    12,879,520.80/19,319,281.20 = 3,902,906.40/x
  3. Step 3: Cross multiply
    12,879,520.80x = 19,319,281.20 × 3,902,906.40
  4. Step 4: Simplify right side
    12,879,520.80x = 75,401,346,238,879.67
  5. Step 5: Solve for x
    x = 75,401,346,238,879.67/12,879,520.80
  6. Step 6: Final answer
    x = 5,854,359.60

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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.