Home / 639,021.68-882,143.45-551,458.45

Finding the Fourth Proportional to 639,021.68, 882,143.45 and 551,458.45

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Solution

The fourth proportional to 639,021.68, 882,143.45 and 551,458.45 is: 761,265.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,021.68 : 882,143.45 = 551,458.45 : x
  2. Step 2: Convert to fraction form
    639,021.68/882,143.45 = 551,458.45/x
  3. Step 3: Cross multiply
    639,021.68x = 882,143.45 × 551,458.45
  4. Step 4: Simplify right side
    639,021.68x = 486,465,459,614.65
  5. Step 5: Solve for x
    x = 486,465,459,614.65/639,021.68
  6. Step 6: Final answer
    x = 761,265.97

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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.