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Finding the Fourth Proportional to 7,986,842.79, 11,021,842.80 and 4,315,759.29

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Solution

The fourth proportional to 7,986,842.79, 11,021,842.80 and 4,315,759.29 is: 5,955,747.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986,842.79 : 11,021,842.80 = 4,315,759.29 : x
  2. Step 2: Convert to fraction form
    7,986,842.79/11,021,842.80 = 4,315,759.29/x
  3. Step 3: Cross multiply
    7,986,842.79x = 11,021,842.80 × 4,315,759.29
  4. Step 4: Simplify right side
    7,986,842.79x = 47,567,620,457,019.62
  5. Step 5: Solve for x
    x = 47,567,620,457,019.62/7,986,842.79
  6. Step 6: Final answer
    x = 5,955,747.69

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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.