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Finding the Fourth Proportional to 667,593.51, 921,280.01 and 395,794.50

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Solution

The fourth proportional to 667,593.51, 921,280.01 and 395,794.50 is: 546,196.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,593.51 : 921,280.01 = 395,794.50 : x
  2. Step 2: Convert to fraction form
    667,593.51/921,280.01 = 395,794.50/x
  3. Step 3: Cross multiply
    667,593.51x = 921,280.01 × 395,794.50
  4. Step 4: Simplify right side
    667,593.51x = 364,637,558,938.97
  5. Step 5: Solve for x
    x = 364,637,558,938.97/667,593.51
  6. Step 6: Final answer
    x = 546,196.98

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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.