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Finding the Fourth Proportional to 856,920.92, 1,283,978.93 and 520,064.82

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Solution

The fourth proportional to 856,920.92, 1,283,978.93 and 520,064.82 is: 779,246.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,920.92 : 1,283,978.93 = 520,064.82 : x
  2. Step 2: Convert to fraction form
    856,920.92/1,283,978.93 = 520,064.82/x
  3. Step 3: Cross multiply
    856,920.92x = 1,283,978.93 × 520,064.82
  4. Step 4: Simplify right side
    856,920.92x = 667,752,268,513.92
  5. Step 5: Solve for x
    x = 667,752,268,513.92/856,920.92
  6. Step 6: Final answer
    x = 779,246.09

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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.