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Finding the Fourth Proportional to 872,761.60, 1,309,833.60 and 340,537.60

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Solution

The fourth proportional to 872,761.60, 1,309,833.60 and 340,537.60 is: 511,076.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,761.60 : 1,309,833.60 = 340,537.60 : x
  2. Step 2: Convert to fraction form
    872,761.60/1,309,833.60 = 340,537.60/x
  3. Step 3: Cross multiply
    872,761.60x = 1,309,833.60 × 340,537.60
  4. Step 4: Simplify right side
    872,761.60x = 446,047,590,543.36
  5. Step 5: Solve for x
    x = 446,047,590,543.36/872,761.60
  6. Step 6: Final answer
    x = 511,076.10

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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.