Home / 817,133.76-1,225,428.48-343,730.88

Finding the Fourth Proportional to 817,133.76, 1,225,428.48 and 343,730.88

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Solution

The fourth proportional to 817,133.76, 1,225,428.48 and 343,730.88 is: 515,481.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,133.76 : 1,225,428.48 = 343,730.88 : x
  2. Step 2: Convert to fraction form
    817,133.76/1,225,428.48 = 343,730.88/x
  3. Step 3: Cross multiply
    817,133.76x = 1,225,428.48 × 343,730.88
  4. Step 4: Simplify right side
    817,133.76x = 421,217,609,807.46
  5. Step 5: Solve for x
    x = 421,217,609,807.46/817,133.76
  6. Step 6: Final answer
    x = 515,481.83

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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.