Home / 1,012,979.31-1,520,539.37-990,108.15

Finding the Fourth Proportional to 1,012,979.31, 1,520,539.37 and 990,108.15

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Solution

The fourth proportional to 1,012,979.31, 1,520,539.37 and 990,108.15 is: 1,486,208.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,012,979.31 : 1,520,539.37 = 990,108.15 : x
  2. Step 2: Convert to fraction form
    1,012,979.31/1,520,539.37 = 990,108.15/x
  3. Step 3: Cross multiply
    1,012,979.31x = 1,520,539.37 × 990,108.15
  4. Step 4: Simplify right side
    1,012,979.31x = 1,505,498,422,632.87
  5. Step 5: Solve for x
    x = 1,505,498,422,632.87/1,012,979.31
  6. Step 6: Final answer
    x = 1,486,208.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.