Home / 991,551.48-1,368,229.77-561,739.56

Finding the Fourth Proportional to 991,551.48, 1,368,229.77 and 561,739.56

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Solution

The fourth proportional to 991,551.48, 1,368,229.77 and 561,739.56 is: 775,137.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,551.48 : 1,368,229.77 = 561,739.56 : x
  2. Step 2: Convert to fraction form
    991,551.48/1,368,229.77 = 561,739.56/x
  3. Step 3: Cross multiply
    991,551.48x = 1,368,229.77 × 561,739.56
  4. Step 4: Simplify right side
    991,551.48x = 768,588,788,978.70
  5. Step 5: Solve for x
    x = 768,588,788,978.70/991,551.48
  6. Step 6: Final answer
    x = 775,137.55

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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.