Home / 686,479.24-947,145.52-396,067.81

Finding the Fourth Proportional to 686,479.24, 947,145.52 and 396,067.81

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Solution

The fourth proportional to 686,479.24, 947,145.52 and 396,067.81 is: 546,460.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,479.24 : 947,145.52 = 396,067.81 : x
  2. Step 2: Convert to fraction form
    686,479.24/947,145.52 = 396,067.81/x
  3. Step 3: Cross multiply
    686,479.24x = 947,145.52 × 396,067.81
  4. Step 4: Simplify right side
    686,479.24x = 375,133,851,857.71
  5. Step 5: Solve for x
    x = 375,133,851,857.71/686,479.24
  6. Step 6: Final answer
    x = 546,460.59

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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.