Home / 398,412,005.80-597,618,008.70-125,747,343.40

Finding the Fourth Proportional to 398,412,005.80, 597,618,008.70 and 125,747,343.40

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Solution

The fourth proportional to 398,412,005.80, 597,618,008.70 and 125,747,343.40 is: 188,621,015.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,412,005.80 : 597,618,008.70 = 125,747,343.40 : x
  2. Step 2: Convert to fraction form
    398,412,005.80/597,618,008.70 = 125,747,343.40/x
  3. Step 3: Cross multiply
    398,412,005.80x = 597,618,008.70 × 125,747,343.40
  4. Step 4: Simplify right side
    398,412,005.80x = 75,148,876,962,023,104
  5. Step 5: Solve for x
    x = 75,148,876,962,023,104/398,412,005.80
  6. Step 6: Final answer
    x = 188,621,015.10

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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.