Home / 814,721.64-1,221,790.84-282,099.64

Finding the Fourth Proportional to 814,721.64, 1,221,790.84 and 282,099.64

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Solution

The fourth proportional to 814,721.64, 1,221,790.84 and 282,099.64 is: 423,048.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,721.64 : 1,221,790.84 = 282,099.64 : x
  2. Step 2: Convert to fraction form
    814,721.64/1,221,790.84 = 282,099.64/x
  3. Step 3: Cross multiply
    814,721.64x = 1,221,790.84 × 282,099.64
  4. Step 4: Simplify right side
    814,721.64x = 344,666,756,119.30
  5. Step 5: Solve for x
    x = 344,666,756,119.30/814,721.64
  6. Step 6: Final answer
    x = 423,048.49

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Double scale
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1.5x scale

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.