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Finding the Fourth Proportional to 671,449.92, 926,565.12 and 384,956.16

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Solution

The fourth proportional to 671,449.92, 926,565.12 and 384,956.16 is: 531,218.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,449.92 : 926,565.12 = 384,956.16 : x
  2. Step 2: Convert to fraction form
    671,449.92/926,565.12 = 384,956.16/x
  3. Step 3: Cross multiply
    671,449.92x = 926,565.12 × 384,956.16
  4. Step 4: Simplify right side
    671,449.92x = 356,686,950,585.14
  5. Step 5: Solve for x
    x = 356,686,950,585.14/671,449.92
  6. Step 6: Final answer
    x = 531,218.99

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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.