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Finding the Fourth Proportional to 579,607.34, 868,313.61 and 386,900.73

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Solution

The fourth proportional to 579,607.34, 868,313.61 and 386,900.73 is: 579,618.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,607.34 : 868,313.61 = 386,900.73 : x
  2. Step 2: Convert to fraction form
    579,607.34/868,313.61 = 386,900.73/x
  3. Step 3: Cross multiply
    579,607.34x = 868,313.61 × 386,900.73
  4. Step 4: Simplify right side
    579,607.34x = 335,951,169,577.94
  5. Step 5: Solve for x
    x = 335,951,169,577.94/579,607.34
  6. Step 6: Final answer
    x = 579,618.56

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Double scale
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1.5x scale

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.