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Finding the Fourth Proportional to 618,281.33, 926,214.58 and 426,121.38

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Solution

The fourth proportional to 618,281.33, 926,214.58 and 426,121.38 is: 638,349.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,281.33 : 926,214.58 = 426,121.38 : x
  2. Step 2: Convert to fraction form
    618,281.33/926,214.58 = 426,121.38/x
  3. Step 3: Cross multiply
    618,281.33x = 926,214.58 × 426,121.38
  4. Step 4: Simplify right side
    618,281.33x = 394,679,835,005.72
  5. Step 5: Solve for x
    x = 394,679,835,005.72/618,281.33
  6. Step 6: Final answer
    x = 638,349.92

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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.