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Finding the Fourth Proportional to 668,889.29, 922,804.47 and 382,255.61

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Solution

The fourth proportional to 668,889.29, 922,804.47 and 382,255.61 is: 527,362.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,889.29 : 922,804.47 = 382,255.61 : x
  2. Step 2: Convert to fraction form
    668,889.29/922,804.47 = 382,255.61/x
  3. Step 3: Cross multiply
    668,889.29x = 922,804.47 × 382,255.61
  4. Step 4: Simplify right side
    668,889.29x = 352,747,185,590.58
  5. Step 5: Solve for x
    x = 352,747,185,590.58/668,889.29
  6. Step 6: Final answer
    x = 527,362.59

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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.