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Finding the Fourth Proportional to 642,843.02, 964,425.12 and 453,672.65

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Solution

The fourth proportional to 642,843.02, 964,425.12 and 453,672.65 is: 680,622.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,843.02 : 964,425.12 = 453,672.65 : x
  2. Step 2: Convert to fraction form
    642,843.02/964,425.12 = 453,672.65/x
  3. Step 3: Cross multiply
    642,843.02x = 964,425.12 × 453,672.65
  4. Step 4: Simplify right side
    642,843.02x = 437,533,295,094.84
  5. Step 5: Solve for x
    x = 437,533,295,094.84/642,843.02
  6. Step 6: Final answer
    x = 680,622.31

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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.