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Finding the Fourth Proportional to 608,020.47, 838,952.78 and 381,563.91

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Solution

The fourth proportional to 608,020.47, 838,952.78 and 381,563.91 is: 526,485.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,020.47 : 838,952.78 = 381,563.91 : x
  2. Step 2: Convert to fraction form
    608,020.47/838,952.78 = 381,563.91/x
  3. Step 3: Cross multiply
    608,020.47x = 838,952.78 × 381,563.91
  4. Step 4: Simplify right side
    608,020.47x = 320,114,101,134.35
  5. Step 5: Solve for x
    x = 320,114,101,134.35/608,020.47
  6. Step 6: Final answer
    x = 526,485.73

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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.