Home / 7,920,456,064.35-11,880,684,096.53-3,988,642,969.95

Finding the Fourth Proportional to 7,920,456,064.35, 11,880,684,096.53 and 3,988,642,969.95

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Solution

The fourth proportional to 7,920,456,064.35, 11,880,684,096.53 and 3,988,642,969.95 is: 5,982,964,454.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920,456,064.35 : 11,880,684,096.53 = 3,988,642,969.95 : x
  2. Step 2: Convert to fraction form
    7,920,456,064.35/11,880,684,096.53 = 3,988,642,969.95/x
  3. Step 3: Cross multiply
    7,920,456,064.35x = 11,880,684,096.53 × 3,988,642,969.95
  4. Step 4: Simplify right side
    7,920,456,064.35x = 47,387,807,099,801,206,784
  5. Step 5: Solve for x
    x = 47,387,807,099,801,206,784/7,920,456,064.35
  6. Step 6: Final answer
    x = 5,982,964,454.93

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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.