Home / 7,218,965-9,962,171.70-3,999,701

Finding the Fourth Proportional to 7,218,965, 9,962,171.70 and 3,999,701

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Solution

The fourth proportional to 7,218,965, 9,962,171.70 and 3,999,701 is: 5,519,587.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218,965 : 9,962,171.70 = 3,999,701 : x
  2. Step 2: Convert to fraction form
    7,218,965/9,962,171.70 = 3,999,701/x
  3. Step 3: Cross multiply
    7,218,965x = 9,962,171.70 × 3,999,701
  4. Step 4: Simplify right side
    7,218,965x = 39,845,708,110,661.70
  5. Step 5: Solve for x
    x = 39,845,708,110,661.70/7,218,965
  6. Step 6: Final answer
    x = 5,519,587.38

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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.