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Finding the Fourth Proportional to 622,368.60, 934,244.10 and 385,978.20

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Solution

The fourth proportional to 622,368.60, 934,244.10 and 385,978.20 is: 579,395.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,368.60 : 934,244.10 = 385,978.20 : x
  2. Step 2: Convert to fraction form
    622,368.60/934,244.10 = 385,978.20/x
  3. Step 3: Cross multiply
    622,368.60x = 934,244.10 × 385,978.20
  4. Step 4: Simplify right side
    622,368.60x = 360,597,856,078.62
  5. Step 5: Solve for x
    x = 360,597,856,078.62/622,368.60
  6. Step 6: Final answer
    x = 579,395.97

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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.