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Finding the Fourth Proportional to 1,451,750, 2,003,415 and 815,846

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Solution

The fourth proportional to 1,451,750, 2,003,415 and 815,846 is: 1,125,867.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451,750 : 2,003,415 = 815,846 : x
  2. Step 2: Convert to fraction form
    1,451,750/2,003,415 = 815,846/x
  3. Step 3: Cross multiply
    1,451,750x = 2,003,415 × 815,846
  4. Step 4: Simplify right side
    1,451,750x = 1,634,478,114,090
  5. Step 5: Solve for x
    x = 1,634,478,114,090/1,451,750
  6. Step 6: Final answer
    x = 1,125,867.48

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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.