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Finding the Fourth Proportional to 1,787,821.37, 2,467,241.87 and 972,079.82

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Solution

The fourth proportional to 1,787,821.37, 2,467,241.87 and 972,079.82 is: 1,341,496.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787,821.37 : 2,467,241.87 = 972,079.82 : x
  2. Step 2: Convert to fraction form
    1,787,821.37/2,467,241.87 = 972,079.82/x
  3. Step 3: Cross multiply
    1,787,821.37x = 2,467,241.87 × 972,079.82
  4. Step 4: Simplify right side
    1,787,821.37x = 2,398,356,015,689.46
  5. Step 5: Solve for x
    x = 2,398,356,015,689.46/1,787,821.37
  6. Step 6: Final answer
    x = 1,341,496.45

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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.