Home / 12,891,520.80-19,337,281.20-3,914,906.40

Finding the Fourth Proportional to 12,891,520.80, 19,337,281.20 and 3,914,906.40

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Solution

The fourth proportional to 12,891,520.80, 19,337,281.20 and 3,914,906.40 is: 5,872,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,891,520.80 : 19,337,281.20 = 3,914,906.40 : x
  2. Step 2: Convert to fraction form
    12,891,520.80/19,337,281.20 = 3,914,906.40/x
  3. Step 3: Cross multiply
    12,891,520.80x = 19,337,281.20 × 3,914,906.40
  4. Step 4: Simplify right side
    12,891,520.80x = 75,703,645,928,479.67
  5. Step 5: Solve for x
    x = 75,703,645,928,479.67/12,891,520.80
  6. Step 6: Final answer
    x = 5,872,359.60

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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.