Home / 991,408.77-1,368,148.55-561,772.62

Finding the Fourth Proportional to 991,408.77, 1,368,148.55 and 561,772.62

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Solution

The fourth proportional to 991,408.77, 1,368,148.55 and 561,772.62 is: 775,248.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,408.77 : 1,368,148.55 = 561,772.62 : x
  2. Step 2: Convert to fraction form
    991,408.77/1,368,148.55 = 561,772.62/x
  3. Step 3: Cross multiply
    991,408.77x = 1,368,148.55 × 561,772.62
  4. Step 4: Simplify right side
    991,408.77x = 768,588,392,673.84
  5. Step 5: Solve for x
    x = 768,588,392,673.84/991,408.77
  6. Step 6: Final answer
    x = 775,248.73

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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.