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Finding the Fourth Proportional to 519,706.01, 779,978.82 and 220,396.60

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Solution

The fourth proportional to 519,706.01, 779,978.82 and 220,396.60 is: 330,772.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,706.01 : 779,978.82 = 220,396.60 : x
  2. Step 2: Convert to fraction form
    519,706.01/779,978.82 = 220,396.60/x
  3. Step 3: Cross multiply
    519,706.01x = 779,978.82 × 220,396.60
  4. Step 4: Simplify right side
    519,706.01x = 171,904,680,561.74
  5. Step 5: Solve for x
    x = 171,904,680,561.74/519,706.01
  6. Step 6: Final answer
    x = 330,772.93

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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.