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Finding the Fourth Proportional to 616,072.80, 922,726.80 and 505,480.80

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Solution

The fourth proportional to 616,072.80, 922,726.80 and 505,480.80 is: 757,086.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,072.80 : 922,726.80 = 505,480.80 : x
  2. Step 2: Convert to fraction form
    616,072.80/922,726.80 = 505,480.80/x
  3. Step 3: Cross multiply
    616,072.80x = 922,726.80 × 505,480.80
  4. Step 4: Simplify right side
    616,072.80x = 466,420,681,045.44
  5. Step 5: Solve for x
    x = 466,420,681,045.44/616,072.80
  6. Step 6: Final answer
    x = 757,086.96

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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.