Home / 431,357,476.80-647,036,215.20-189,492,772.80

Finding the Fourth Proportional to 431,357,476.80, 647,036,215.20 and 189,492,772.80

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Solution

The fourth proportional to 431,357,476.80, 647,036,215.20 and 189,492,772.80 is: 284,239,159.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,357,476.80 : 647,036,215.20 = 189,492,772.80 : x
  2. Step 2: Convert to fraction form
    431,357,476.80/647,036,215.20 = 189,492,772.80/x
  3. Step 3: Cross multiply
    431,357,476.80x = 647,036,215.20 × 189,492,772.80
  4. Step 4: Simplify right side
    431,357,476.80x = 122,608,686,520,265,520
  5. Step 5: Solve for x
    x = 122,608,686,520,265,520/431,357,476.80
  6. Step 6: Final answer
    x = 284,239,159.20

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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.