Home / 991,305.61-1,367,957.15-561,576.97

Finding the Fourth Proportional to 991,305.61, 1,367,957.15 and 561,576.97

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Solution

The fourth proportional to 991,305.61, 1,367,957.15 and 561,576.97 is: 774,950.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,305.61 : 1,367,957.15 = 561,576.97 : x
  2. Step 2: Convert to fraction form
    991,305.61/1,367,957.15 = 561,576.97/x
  3. Step 3: Cross multiply
    991,305.61x = 1,367,957.15 × 561,576.97
  4. Step 4: Simplify right side
    991,305.61x = 768,213,225,950.99
  5. Step 5: Solve for x
    x = 768,213,225,950.99/991,305.61
  6. Step 6: Final answer
    x = 774,950.96

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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.