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Finding the Fourth Proportional to 617,921.80, 927,228.30 and 262,875.40

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Solution

The fourth proportional to 617,921.80, 927,228.30 and 262,875.40 is: 394,460.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,921.80 : 927,228.30 = 262,875.40 : x
  2. Step 2: Convert to fraction form
    617,921.80/927,228.30 = 262,875.40/x
  3. Step 3: Cross multiply
    617,921.80x = 927,228.30 × 262,875.40
  4. Step 4: Simplify right side
    617,921.80x = 243,745,510,253.82
  5. Step 5: Solve for x
    x = 243,745,510,253.82/617,921.80
  6. Step 6: Final answer
    x = 394,460.12

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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.