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Finding the Fourth Proportional to 660,425.16, 911,369.16 and 373,972.44

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Solution

The fourth proportional to 660,425.16, 911,369.16 and 373,972.44 is: 516,072.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,425.16 : 911,369.16 = 373,972.44 : x
  2. Step 2: Convert to fraction form
    660,425.16/911,369.16 = 373,972.44/x
  3. Step 3: Cross multiply
    660,425.16x = 911,369.16 × 373,972.44
  4. Step 4: Simplify right side
    660,425.16x = 340,826,948,505.95
  5. Step 5: Solve for x
    x = 340,826,948,505.95/660,425.16
  6. Step 6: Final answer
    x = 516,072.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.