Home / 815,276.48-1,217,424.81-665,813.48

Finding the Fourth Proportional to 815,276.48, 1,217,424.81 and 665,813.48

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Solution

The fourth proportional to 815,276.48, 1,217,424.81 and 665,813.48 is: 994,236.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,276.48 : 1,217,424.81 = 665,813.48 : x
  2. Step 2: Convert to fraction form
    815,276.48/1,217,424.81 = 665,813.48/x
  3. Step 3: Cross multiply
    815,276.48x = 1,217,424.81 × 665,813.48
  4. Step 4: Simplify right side
    815,276.48x = 810,577,845,794.12
  5. Step 5: Solve for x
    x = 810,577,845,794.12/815,276.48
  6. Step 6: Final answer
    x = 994,236.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.