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Finding the Fourth Proportional to 823,458.40, 1,235,648.40 and 350,063.20

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Solution

The fourth proportional to 823,458.40, 1,235,648.40 and 350,063.20 is: 525,290.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,458.40 : 1,235,648.40 = 350,063.20 : x
  2. Step 2: Convert to fraction form
    823,458.40/1,235,648.40 = 350,063.20/x
  3. Step 3: Cross multiply
    823,458.40x = 1,235,648.40 × 350,063.20
  4. Step 4: Simplify right side
    823,458.40x = 432,555,032,978.88
  5. Step 5: Solve for x
    x = 432,555,032,978.88/823,458.40
  6. Step 6: Final answer
    x = 525,290.69

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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.