Home / 7,920,455,909.10-11,880,683,863.65-3,988,642,814.70

Finding the Fourth Proportional to 7,920,455,909.10, 11,880,683,863.65 and 3,988,642,814.70

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Solution

The fourth proportional to 7,920,455,909.10, 11,880,683,863.65 and 3,988,642,814.70 is: 5,982,964,222.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920,455,909.10 : 11,880,683,863.65 = 3,988,642,814.70 : x
  2. Step 2: Convert to fraction form
    7,920,455,909.10/11,880,683,863.65 = 3,988,642,814.70/x
  3. Step 3: Cross multiply
    7,920,455,909.10x = 11,880,683,863.65 × 3,988,642,814.70
  4. Step 4: Simplify right side
    7,920,455,909.10x = 47,387,804,326,469,804,032
  5. Step 5: Solve for x
    x = 47,387,804,326,469,804,032/7,920,455,909.10
  6. Step 6: Final answer
    x = 5,982,964,222.05

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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.