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Finding the Fourth Proportional to 701,419.16, 967,907.28 and 395,479.76

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Solution

The fourth proportional to 701,419.16, 967,907.28 and 395,479.76 is: 545,733.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    701,419.16 : 967,907.28 = 395,479.76 : x
  2. Step 2: Convert to fraction form
    701,419.16/967,907.28 = 395,479.76/x
  3. Step 3: Cross multiply
    701,419.16x = 967,907.28 × 395,479.76
  4. Step 4: Simplify right side
    701,419.16x = 382,787,738,796.65
  5. Step 5: Solve for x
    x = 382,787,738,796.65/701,419.16
  6. Step 6: Final answer
    x = 545,733.22

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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.