Home / 998,690.50-1,378,197.75-545,981.50

Finding the Fourth Proportional to 998,690.50, 1,378,197.75 and 545,981.50

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Solution

The fourth proportional to 998,690.50, 1,378,197.75 and 545,981.50 is: 753,457.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,690.50 : 1,378,197.75 = 545,981.50 : x
  2. Step 2: Convert to fraction form
    998,690.50/1,378,197.75 = 545,981.50/x
  3. Step 3: Cross multiply
    998,690.50x = 1,378,197.75 × 545,981.50
  4. Step 4: Simplify right side
    998,690.50x = 752,470,474,841.63
  5. Step 5: Solve for x
    x = 752,470,474,841.63/998,690.50
  6. Step 6: Final answer
    x = 753,457.13

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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.