Home / 991,879.01-1,367,525.99-642,402.08

Finding the Fourth Proportional to 991,879.01, 1,367,525.99 and 642,402.08

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Solution

The fourth proportional to 991,879.01, 1,367,525.99 and 642,402.08 is: 885,694.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,879.01 : 1,367,525.99 = 642,402.08 : x
  2. Step 2: Convert to fraction form
    991,879.01/1,367,525.99 = 642,402.08/x
  3. Step 3: Cross multiply
    991,879.01x = 1,367,525.99 × 642,402.08
  4. Step 4: Simplify right side
    991,879.01x = 878,501,530,380.42
  5. Step 5: Solve for x
    x = 878,501,530,380.42/991,879.01
  6. Step 6: Final answer
    x = 885,694.25

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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.