Home / 431,137,872.90-646,706,809.35-124,439,991.30

Finding the Fourth Proportional to 431,137,872.90, 646,706,809.35 and 124,439,991.30

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Solution

The fourth proportional to 431,137,872.90, 646,706,809.35 and 124,439,991.30 is: 186,659,986.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,137,872.90 : 646,706,809.35 = 124,439,991.30 : x
  2. Step 2: Convert to fraction form
    431,137,872.90/646,706,809.35 = 124,439,991.30/x
  3. Step 3: Cross multiply
    431,137,872.90x = 646,706,809.35 × 124,439,991.30
  4. Step 4: Simplify right side
    431,137,872.90x = 80,476,189,729,164,752
  5. Step 5: Solve for x
    x = 80,476,189,729,164,752/431,137,872.90
  6. Step 6: Final answer
    x = 186,659,986.95

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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.