Home / 811,828.47-1,217,850.29-299,424.63

Finding the Fourth Proportional to 811,828.47, 1,217,850.29 and 299,424.63

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Solution

The fourth proportional to 811,828.47, 1,217,850.29 and 299,424.63 is: 449,176.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,828.47 : 1,217,850.29 = 299,424.63 : x
  2. Step 2: Convert to fraction form
    811,828.47/1,217,850.29 = 299,424.63/x
  3. Step 3: Cross multiply
    811,828.47x = 1,217,850.29 × 299,424.63
  4. Step 4: Simplify right side
    811,828.47x = 364,654,370,981.52
  5. Step 5: Solve for x
    x = 364,654,370,981.52/811,828.47
  6. Step 6: Final answer
    x = 449,176.62

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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.