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Finding the Fourth Proportional to 615,976.19, 850,064.28 and 340,351.81

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Solution

The fourth proportional to 615,976.19, 850,064.28 and 340,351.81 is: 469,694.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,976.19 : 850,064.28 = 340,351.81 : x
  2. Step 2: Convert to fraction form
    615,976.19/850,064.28 = 340,351.81/x
  3. Step 3: Cross multiply
    615,976.19x = 850,064.28 × 340,351.81
  4. Step 4: Simplify right side
    615,976.19x = 289,320,914,827.35
  5. Step 5: Solve for x
    x = 289,320,914,827.35/615,976.19
  6. Step 6: Final answer
    x = 469,694.96

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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.