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Finding the Fourth Proportional to 626,188.74, 864,139.92 and 339,708.84

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Solution

The fourth proportional to 626,188.74, 864,139.92 and 339,708.84 is: 468,797.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,188.74 : 864,139.92 = 339,708.84 : x
  2. Step 2: Convert to fraction form
    626,188.74/864,139.92 = 339,708.84/x
  3. Step 3: Cross multiply
    626,188.74x = 864,139.92 × 339,708.84
  4. Step 4: Simplify right side
    626,188.74x = 293,555,969,820.89
  5. Step 5: Solve for x
    x = 293,555,969,820.89/626,188.74
  6. Step 6: Final answer
    x = 468,797.91

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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.