Home / 431,371,628.80-647,057,443.20-239,895,404.80

Finding the Fourth Proportional to 431,371,628.80, 647,057,443.20 and 239,895,404.80

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Solution

The fourth proportional to 431,371,628.80, 647,057,443.20 and 239,895,404.80 is: 359,843,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,371,628.80 : 647,057,443.20 = 239,895,404.80 : x
  2. Step 2: Convert to fraction form
    431,371,628.80/647,057,443.20 = 239,895,404.80/x
  3. Step 3: Cross multiply
    431,371,628.80x = 647,057,443.20 × 239,895,404.80
  4. Step 4: Simplify right side
    431,371,628.80x = 155,226,107,265,317,024
  5. Step 5: Solve for x
    x = 155,226,107,265,317,024/431,371,628.80
  6. Step 6: Final answer
    x = 359,843,107.20

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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.