Home / 1,220,170,825.80-1,683,836,824.62-663,253,872.87

Finding the Fourth Proportional to 1,220,170,825.80, 1,683,836,824.62 and 663,253,872.87

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Solution

The fourth proportional to 1,220,170,825.80, 1,683,836,824.62 and 663,253,872.87 is: 915,290,934.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,170,825.80 : 1,683,836,824.62 = 663,253,872.87 : x
  2. Step 2: Convert to fraction form
    1,220,170,825.80/1,683,836,824.62 = 663,253,872.87/x
  3. Step 3: Cross multiply
    1,220,170,825.80x = 1,683,836,824.62 × 663,253,872.87
  4. Step 4: Simplify right side
    1,220,170,825.80x = 1,116,811,295,210,337,920
  5. Step 5: Solve for x
    x = 1,116,811,295,210,337,920/1,220,170,825.80
  6. Step 6: Final answer
    x = 915,290,934.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.