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Finding the Fourth Proportional to 617,063.40, 926,451.66 and 317,757.80

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Solution

The fourth proportional to 617,063.40, 926,451.66 and 317,757.80 is: 477,077.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,063.40 : 926,451.66 = 317,757.80 : x
  2. Step 2: Convert to fraction form
    617,063.40/926,451.66 = 317,757.80/x
  3. Step 3: Cross multiply
    617,063.40x = 926,451.66 × 317,757.80
  4. Step 4: Simplify right side
    617,063.40x = 294,387,241,287.95
  5. Step 5: Solve for x
    x = 294,387,241,287.95/617,063.40
  6. Step 6: Final answer
    x = 477,077.79

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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.