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Finding the Fourth Proportional to 842,994.16, 1,264,906.43 and 393,649.72

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Solution

The fourth proportional to 842,994.16, 1,264,906.43 and 393,649.72 is: 590,668.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,994.16 : 1,264,906.43 = 393,649.72 : x
  2. Step 2: Convert to fraction form
    842,994.16/1,264,906.43 = 393,649.72/x
  3. Step 3: Cross multiply
    842,994.16x = 1,264,906.43 × 393,649.72
  4. Step 4: Simplify right side
    842,994.16x = 497,930,062,100.65
  5. Step 5: Solve for x
    x = 497,930,062,100.65/842,994.16
  6. Step 6: Final answer
    x = 590,668.46

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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.