Home / 991,326.80-1,485,950.52-485,189.84

Finding the Fourth Proportional to 991,326.80, 1,485,950.52 and 485,189.84

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Solution

The fourth proportional to 991,326.80, 1,485,950.52 and 485,189.84 is: 727,275.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,326.80 : 1,485,950.52 = 485,189.84 : x
  2. Step 2: Convert to fraction form
    991,326.80/1,485,950.52 = 485,189.84/x
  3. Step 3: Cross multiply
    991,326.80x = 1,485,950.52 × 485,189.84
  4. Step 4: Simplify right side
    991,326.80x = 720,968,095,046.72
  5. Step 5: Solve for x
    x = 720,968,095,046.72/991,326.80
  6. Step 6: Final answer
    x = 727,275.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.