Home / 861,167.12-1,188,741.32-646,928.64

Finding the Fourth Proportional to 861,167.12, 1,188,741.32 and 646,928.64

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Solution

The fourth proportional to 861,167.12, 1,188,741.32 and 646,928.64 is: 893,009.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,167.12 : 1,188,741.32 = 646,928.64 : x
  2. Step 2: Convert to fraction form
    861,167.12/1,188,741.32 = 646,928.64/x
  3. Step 3: Cross multiply
    861,167.12x = 1,188,741.32 × 646,928.64
  4. Step 4: Simplify right side
    861,167.12x = 769,030,805,459.41
  5. Step 5: Solve for x
    x = 769,030,805,459.41/861,167.12
  6. Step 6: Final answer
    x = 893,009.95

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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.