Home / 28,084,278.80-42,126,418.20-7,889,520.80

Finding the Fourth Proportional to 28,084,278.80, 42,126,418.20 and 7,889,520.80

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Solution

The fourth proportional to 28,084,278.80, 42,126,418.20 and 7,889,520.80 is: 11,834,281.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,084,278.80 : 42,126,418.20 = 7,889,520.80 : x
  2. Step 2: Convert to fraction form
    28,084,278.80/42,126,418.20 = 7,889,520.80/x
  3. Step 3: Cross multiply
    28,084,278.80x = 42,126,418.20 × 7,889,520.80
  4. Step 4: Simplify right side
    28,084,278.80x = 332,357,252,618,398.56
  5. Step 5: Solve for x
    x = 332,357,252,618,398.56/28,084,278.80
  6. Step 6: Final answer
    x = 11,834,281.20

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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.