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Finding the Fourth Proportional to 2,872,843.06, 4,308,913.43 and 742,748.80

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Solution

The fourth proportional to 2,872,843.06, 4,308,913.43 and 742,748.80 is: 1,114,032.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872,843.06 : 4,308,913.43 = 742,748.80 : x
  2. Step 2: Convert to fraction form
    2,872,843.06/4,308,913.43 = 742,748.80/x
  3. Step 3: Cross multiply
    2,872,843.06x = 4,308,913.43 × 742,748.80
  4. Step 4: Simplify right side
    2,872,843.06x = 3,200,440,279,436.38
  5. Step 5: Solve for x
    x = 3,200,440,279,436.38/2,872,843.06
  6. Step 6: Final answer
    x = 1,114,032.41

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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.