Home / 12,947,200.80-19,420,801.20-3,970,586.40

Finding the Fourth Proportional to 12,947,200.80, 19,420,801.20 and 3,970,586.40

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Solution

The fourth proportional to 12,947,200.80, 19,420,801.20 and 3,970,586.40 is: 5,955,879.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,947,200.80 : 19,420,801.20 = 3,970,586.40 : x
  2. Step 2: Convert to fraction form
    12,947,200.80/19,420,801.20 = 3,970,586.40/x
  3. Step 3: Cross multiply
    12,947,200.80x = 19,420,801.20 × 3,970,586.40
  4. Step 4: Simplify right side
    12,947,200.80x = 77,111,969,121,823.67
  5. Step 5: Solve for x
    x = 77,111,969,121,823.67/12,947,200.80
  6. Step 6: Final answer
    x = 5,955,879.60

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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.