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Finding the Fourth Proportional to 668,388.36, 922,711.92 and 435,920.52

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Solution

The fourth proportional to 668,388.36, 922,711.92 and 435,920.52 is: 601,789.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,388.36 : 922,711.92 = 435,920.52 : x
  2. Step 2: Convert to fraction form
    668,388.36/922,711.92 = 435,920.52/x
  3. Step 3: Cross multiply
    668,388.36x = 922,711.92 × 435,920.52
  4. Step 4: Simplify right side
    668,388.36x = 402,229,059,976.60
  5. Step 5: Solve for x
    x = 402,229,059,976.60/668,388.36
  6. Step 6: Final answer
    x = 601,789.44

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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.