Home / 1,220,170,822.80-1,683,836,820.50-663,253,869.87

Finding the Fourth Proportional to 1,220,170,822.80, 1,683,836,820.50 and 663,253,869.87

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Solution

The fourth proportional to 1,220,170,822.80, 1,683,836,820.50 and 663,253,869.87 is: 915,290,930.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,170,822.80 : 1,683,836,820.50 = 663,253,869.87 : x
  2. Step 2: Convert to fraction form
    1,220,170,822.80/1,683,836,820.50 = 663,253,869.87/x
  3. Step 3: Cross multiply
    1,220,170,822.80x = 1,683,836,820.50 × 663,253,869.87
  4. Step 4: Simplify right side
    1,220,170,822.80x = 1,116,811,287,422,905,216
  5. Step 5: Solve for x
    x = 1,116,811,287,422,905,216/1,220,170,822.80
  6. Step 6: Final answer
    x = 915,290,930.22

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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.