Home / 905,879.40-1,249,976.61-497,998.50

Finding the Fourth Proportional to 905,879.40, 1,249,976.61 and 497,998.50

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Solution

The fourth proportional to 905,879.40, 1,249,976.61 and 497,998.50 is: 687,162.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,879.40 : 1,249,976.61 = 497,998.50 : x
  2. Step 2: Convert to fraction form
    905,879.40/1,249,976.61 = 497,998.50/x
  3. Step 3: Cross multiply
    905,879.40x = 1,249,976.61 × 497,998.50
  4. Step 4: Simplify right side
    905,879.40x = 622,486,476,815.09
  5. Step 5: Solve for x
    x = 622,486,476,815.09/905,879.40
  6. Step 6: Final answer
    x = 687,162.64

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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.