Home / 991,045-1,367,619.78-577,556.20

Finding the Fourth Proportional to 991,045, 1,367,619.78 and 577,556.20

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Solution

The fourth proportional to 991,045, 1,367,619.78 and 577,556.20 is: 797,014.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,045 : 1,367,619.78 = 577,556.20 : x
  2. Step 2: Convert to fraction form
    991,045/1,367,619.78 = 577,556.20/x
  3. Step 3: Cross multiply
    991,045x = 1,367,619.78 × 577,556.20
  4. Step 4: Simplify right side
    991,045x = 789,877,283,181.64
  5. Step 5: Solve for x
    x = 789,877,283,181.64/991,045
  6. Step 6: Final answer
    x = 797,014.55

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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.