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Finding the Fourth Proportional to 988,906.23, 1,483,416.78 and 381,698.01

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Solution

The fourth proportional to 988,906.23, 1,483,416.78 and 381,698.01 is: 572,569.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,906.23 : 1,483,416.78 = 381,698.01 : x
  2. Step 2: Convert to fraction form
    988,906.23/1,483,416.78 = 381,698.01/x
  3. Step 3: Cross multiply
    988,906.23x = 1,483,416.78 × 381,698.01
  4. Step 4: Simplify right side
    988,906.23x = 566,217,232,926.61
  5. Step 5: Solve for x
    x = 566,217,232,926.61/988,906.23
  6. Step 6: Final answer
    x = 572,569.18

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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.