Home / 431,357,480.80-647,036,221.20-189,492,776.80

Finding the Fourth Proportional to 431,357,480.80, 647,036,221.20 and 189,492,776.80

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Solution

The fourth proportional to 431,357,480.80, 647,036,221.20 and 189,492,776.80 is: 284,239,165.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,357,480.80 : 647,036,221.20 = 189,492,776.80 : x
  2. Step 2: Convert to fraction form
    431,357,480.80/647,036,221.20 = 189,492,776.80/x
  3. Step 3: Cross multiply
    431,357,480.80x = 647,036,221.20 × 189,492,776.80
  4. Step 4: Simplify right side
    431,357,480.80x = 122,608,690,245,367,040
  5. Step 5: Solve for x
    x = 122,608,690,245,367,040/431,357,480.80
  6. Step 6: Final answer
    x = 284,239,165.20

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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.