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Finding the Fourth Proportional to 998,319, 1,378,345.22 and 590,551.84

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Solution

The fourth proportional to 998,319, 1,378,345.22 and 590,551.84 is: 815,354.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,319 : 1,378,345.22 = 590,551.84 : x
  2. Step 2: Convert to fraction form
    998,319/1,378,345.22 = 590,551.84/x
  3. Step 3: Cross multiply
    998,319x = 1,378,345.22 × 590,551.84
  4. Step 4: Simplify right side
    998,319x = 813,984,305,826.21
  5. Step 5: Solve for x
    x = 813,984,305,826.21/998,319
  6. Step 6: Final answer
    x = 815,354.92

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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.