Home / 431,568,007.40-647,352,011.10-189,230,911.40

Finding the Fourth Proportional to 431,568,007.40, 647,352,011.10 and 189,230,911.40

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Solution

The fourth proportional to 431,568,007.40, 647,352,011.10 and 189,230,911.40 is: 283,846,367.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,568,007.40 : 647,352,011.10 = 189,230,911.40 : x
  2. Step 2: Convert to fraction form
    431,568,007.40/647,352,011.10 = 189,230,911.40/x
  3. Step 3: Cross multiply
    431,568,007.40x = 647,352,011.10 × 189,230,911.40
  4. Step 4: Simplify right side
    431,568,007.40x = 122,499,011,057,075,920
  5. Step 5: Solve for x
    x = 122,499,011,057,075,920/431,568,007.40
  6. Step 6: Final answer
    x = 283,846,367.10

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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.