Home / 499,747.68-689,455.14-308,428.92

Finding the Fourth Proportional to 499,747.68, 689,455.14 and 308,428.92

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Solution

The fourth proportional to 499,747.68, 689,455.14 and 308,428.92 is: 425,510.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,747.68 : 689,455.14 = 308,428.92 : x
  2. Step 2: Convert to fraction form
    499,747.68/689,455.14 = 308,428.92/x
  3. Step 3: Cross multiply
    499,747.68x = 689,455.14 × 308,428.92
  4. Step 4: Simplify right side
    499,747.68x = 212,647,904,218.65
  5. Step 5: Solve for x
    x = 212,647,904,218.65/499,747.68
  6. Step 6: Final answer
    x = 425,510.54

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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.