Home / 991,009.41-1,367,784.78-646,246.79

Finding the Fourth Proportional to 991,009.41, 1,367,784.78 and 646,246.79

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Solution

The fourth proportional to 991,009.41, 1,367,784.78 and 646,246.79 is: 891,945.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,009.41 : 1,367,784.78 = 646,246.79 : x
  2. Step 2: Convert to fraction form
    991,009.41/1,367,784.78 = 646,246.79/x
  3. Step 3: Cross multiply
    991,009.41x = 1,367,784.78 × 646,246.79
  4. Step 4: Simplify right side
    991,009.41x = 883,926,519,753.37
  5. Step 5: Solve for x
    x = 883,926,519,753.37/991,009.41
  6. Step 6: Final answer
    x = 891,945.64

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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.