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Finding the Fourth Proportional to 452,805.40, 678,320.70 and 262,867.66

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Solution

The fourth proportional to 452,805.40, 678,320.70 and 262,867.66 is: 393,786.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,805.40 : 678,320.70 = 262,867.66 : x
  2. Step 2: Convert to fraction form
    452,805.40/678,320.70 = 262,867.66/x
  3. Step 3: Cross multiply
    452,805.40x = 678,320.70 × 262,867.66
  4. Step 4: Simplify right side
    452,805.40x = 178,308,575,138.56
  5. Step 5: Solve for x
    x = 178,308,575,138.56/452,805.40
  6. Step 6: Final answer
    x = 393,786.33

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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.