Home / 661,780.11-992,576.45-212,441.82

Finding the Fourth Proportional to 661,780.11, 992,576.45 and 212,441.82

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Solution

The fourth proportional to 661,780.11, 992,576.45 and 212,441.82 is: 318,632.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,780.11 : 992,576.45 = 212,441.82 : x
  2. Step 2: Convert to fraction form
    661,780.11/992,576.45 = 212,441.82/x
  3. Step 3: Cross multiply
    661,780.11x = 992,576.45 × 212,441.82
  4. Step 4: Simplify right side
    661,780.11x = 210,864,746,464.93
  5. Step 5: Solve for x
    x = 210,864,746,464.93/661,780.11
  6. Step 6: Final answer
    x = 318,632.64

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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.