Home / 7,172,574.17-9,898,065.26-3,909,378.81

Finding the Fourth Proportional to 7,172,574.17, 9,898,065.26 and 3,909,378.81

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Solution

The fourth proportional to 7,172,574.17, 9,898,065.26 and 3,909,378.81 is: 5,394,895.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172,574.17 : 9,898,065.26 = 3,909,378.81 : x
  2. Step 2: Convert to fraction form
    7,172,574.17/9,898,065.26 = 3,909,378.81/x
  3. Step 3: Cross multiply
    7,172,574.17x = 9,898,065.26 × 3,909,378.81
  4. Step 4: Simplify right side
    7,172,574.17x = 38,695,286,587,441.14
  5. Step 5: Solve for x
    x = 38,695,286,587,441.14/7,172,574.17
  6. Step 6: Final answer
    x = 5,394,895.29

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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.