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Finding the Fourth Proportional to 890,478, 1,335,794.76 and 225,630

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Solution

The fourth proportional to 890,478, 1,335,794.76 and 225,630 is: 338,464.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,478 : 1,335,794.76 = 225,630 : x
  2. Step 2: Convert to fraction form
    890,478/1,335,794.76 = 225,630/x
  3. Step 3: Cross multiply
    890,478x = 1,335,794.76 × 225,630
  4. Step 4: Simplify right side
    890,478x = 301,395,371,698.80
  5. Step 5: Solve for x
    x = 301,395,371,698.80/890,478
  6. Step 6: Final answer
    x = 338,464.70

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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.