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Finding the Fourth Proportional to 817,668.70, 1,226,065.65 and 343,818.70

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Solution

The fourth proportional to 817,668.70, 1,226,065.65 and 343,818.70 is: 515,544.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,668.70 : 1,226,065.65 = 343,818.70 : x
  2. Step 2: Convert to fraction form
    817,668.70/1,226,065.65 = 343,818.70/x
  3. Step 3: Cross multiply
    817,668.70x = 1,226,065.65 × 343,818.70
  4. Step 4: Simplify right side
    817,668.70x = 421,544,297,897.66
  5. Step 5: Solve for x
    x = 421,544,297,897.66/817,668.70
  6. Step 6: Final answer
    x = 515,544.13

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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.