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Finding the Fourth Proportional to 998,577, 1,378,041.18 and 545,868

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Solution

The fourth proportional to 998,577, 1,378,041.18 and 545,868 is: 753,300.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,577 : 1,378,041.18 = 545,868 : x
  2. Step 2: Convert to fraction form
    998,577/1,378,041.18 = 545,868/x
  3. Step 3: Cross multiply
    998,577x = 1,378,041.18 × 545,868
  4. Step 4: Simplify right side
    998,577x = 752,228,582,844.24
  5. Step 5: Solve for x
    x = 752,228,582,844.24/998,577
  6. Step 6: Final answer
    x = 753,300.53

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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.