Home / 3,991,178,817.72-5,507,862,407.52-2,207,152,988.28

Finding the Fourth Proportional to 3,991,178,817.72, 5,507,862,407.52 and 2,207,152,988.28

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Solution

The fourth proportional to 3,991,178,817.72, 5,507,862,407.52 and 2,207,152,988.28 is: 3,045,890,832.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991,178,817.72 : 5,507,862,407.52 = 2,207,152,988.28 : x
  2. Step 2: Convert to fraction form
    3,991,178,817.72/5,507,862,407.52 = 2,207,152,988.28/x
  3. Step 3: Cross multiply
    3,991,178,817.72x = 5,507,862,407.52 × 2,207,152,988.28
  4. Step 4: Simplify right side
    3,991,178,817.72x = 12,156,694,971,792,844,800
  5. Step 5: Solve for x
    x = 12,156,694,971,792,844,800/3,991,178,817.72
  6. Step 6: Final answer
    x = 3,045,890,832.51

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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.