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Finding the Fourth Proportional to 1,138,608, 1,570,863.60 and 877,042.56

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Solution

The fourth proportional to 1,138,608, 1,570,863.60 and 877,042.56 is: 1,209,998.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,608 : 1,570,863.60 = 877,042.56 : x
  2. Step 2: Convert to fraction form
    1,138,608/1,570,863.60 = 877,042.56/x
  3. Step 3: Cross multiply
    1,138,608x = 1,570,863.60 × 877,042.56
  4. Step 4: Simplify right side
    1,138,608x = 1,377,714,233,154.82
  5. Step 5: Solve for x
    x = 1,377,714,233,154.82/1,138,608
  6. Step 6: Final answer
    x = 1,209,998.73

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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.