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Finding the Fourth Proportional to 664,644, 917,212.56 and 362,841.12

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Solution

The fourth proportional to 664,644, 917,212.56 and 362,841.12 is: 500,722.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,644 : 917,212.56 = 362,841.12 : x
  2. Step 2: Convert to fraction form
    664,644/917,212.56 = 362,841.12/x
  3. Step 3: Cross multiply
    664,644x = 917,212.56 × 362,841.12
  4. Step 4: Simplify right side
    664,644x = 332,802,432,548.47
  5. Step 5: Solve for x
    x = 332,802,432,548.47/664,644
  6. Step 6: Final answer
    x = 500,722.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.