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Finding the Fourth Proportional to 453,400.40, 680,100.60 and 400,912.40

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Solution

The fourth proportional to 453,400.40, 680,100.60 and 400,912.40 is: 601,368.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,400.40 : 680,100.60 = 400,912.40 : x
  2. Step 2: Convert to fraction form
    453,400.40/680,100.60 = 400,912.40/x
  3. Step 3: Cross multiply
    453,400.40x = 680,100.60 × 400,912.40
  4. Step 4: Simplify right side
    453,400.40x = 272,660,763,787.44
  5. Step 5: Solve for x
    x = 272,660,763,787.44/453,400.40
  6. Step 6: Final answer
    x = 601,368.60

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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.