Home / 998,689.50-1,378,196.37-545,980.50

Finding the Fourth Proportional to 998,689.50, 1,378,196.37 and 545,980.50

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Solution

The fourth proportional to 998,689.50, 1,378,196.37 and 545,980.50 is: 753,455.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,689.50 : 1,378,196.37 = 545,980.50 : x
  2. Step 2: Convert to fraction form
    998,689.50/1,378,196.37 = 545,980.50/x
  3. Step 3: Cross multiply
    998,689.50x = 1,378,196.37 × 545,980.50
  4. Step 4: Simplify right side
    998,689.50x = 752,468,343,190.79
  5. Step 5: Solve for x
    x = 752,468,343,190.79/998,689.50
  6. Step 6: Final answer
    x = 753,455.75

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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.