Home / 991,455.06-1,368,204.42-561,817.29

Finding the Fourth Proportional to 991,455.06, 1,368,204.42 and 561,817.29

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Solution

The fourth proportional to 991,455.06, 1,368,204.42 and 561,817.29 is: 775,305.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,455.06 : 1,368,204.42 = 561,817.29 : x
  2. Step 2: Convert to fraction form
    991,455.06/1,368,204.42 = 561,817.29/x
  3. Step 3: Cross multiply
    991,455.06x = 1,368,204.42 × 561,817.29
  4. Step 4: Simplify right side
    991,455.06x = 768,680,899,410.42
  5. Step 5: Solve for x
    x = 768,680,899,410.42/991,455.06
  6. Step 6: Final answer
    x = 775,305.84

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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.