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Finding the Fourth Proportional to 616,101.40, 923,933.40 and 426,561.40

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Solution

The fourth proportional to 616,101.40, 923,933.40 and 426,561.40 is: 639,690.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,101.40 : 923,933.40 = 426,561.40 : x
  2. Step 2: Convert to fraction form
    616,101.40/923,933.40 = 426,561.40/x
  3. Step 3: Cross multiply
    616,101.40x = 923,933.40 × 426,561.40
  4. Step 4: Simplify right side
    616,101.40x = 394,114,324,610.76
  5. Step 5: Solve for x
    x = 394,114,324,610.76/616,101.40
  6. Step 6: Final answer
    x = 639,690.68

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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.