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Finding the Fourth Proportional to 893,709, 1,340,141.13 and 324,693.30

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Solution

The fourth proportional to 893,709, 1,340,141.13 and 324,693.30 is: 486,886.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,709 : 1,340,141.13 = 324,693.30 : x
  2. Step 2: Convert to fraction form
    893,709/1,340,141.13 = 324,693.30/x
  3. Step 3: Cross multiply
    893,709x = 1,340,141.13 × 324,693.30
  4. Step 4: Simplify right side
    893,709x = 435,134,845,965.43
  5. Step 5: Solve for x
    x = 435,134,845,965.43/893,709
  6. Step 6: Final answer
    x = 486,886.50

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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.