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Finding the Fourth Proportional to 671,745, 927,038.04 and 396,113.88

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Solution

The fourth proportional to 671,745, 927,038.04 and 396,113.88 is: 546,654.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,745 : 927,038.04 = 396,113.88 : x
  2. Step 2: Convert to fraction form
    671,745/927,038.04 = 396,113.88/x
  3. Step 3: Cross multiply
    671,745x = 927,038.04 × 396,113.88
  4. Step 4: Simplify right side
    671,745x = 367,212,634,932.00
  5. Step 5: Solve for x
    x = 367,212,634,932.00/671,745
  6. Step 6: Final answer
    x = 546,654.81

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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.