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Finding the Fourth Proportional to 655,069.56, 904,037.21 and 396,969.11

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Solution

The fourth proportional to 655,069.56, 904,037.21 and 396,969.11 is: 547,842.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,069.56 : 904,037.21 = 396,969.11 : x
  2. Step 2: Convert to fraction form
    655,069.56/904,037.21 = 396,969.11/x
  3. Step 3: Cross multiply
    655,069.56x = 904,037.21 × 396,969.11
  4. Step 4: Simplify right side
    655,069.56x = 358,874,840,155.55
  5. Step 5: Solve for x
    x = 358,874,840,155.55/655,069.56
  6. Step 6: Final answer
    x = 547,842.34

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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.