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Finding the Fourth Proportional to 608,691.54, 840,009.94 and 366,989.63

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Solution

The fourth proportional to 608,691.54, 840,009.94 and 366,989.63 is: 506,455.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,691.54 : 840,009.94 = 366,989.63 : x
  2. Step 2: Convert to fraction form
    608,691.54/840,009.94 = 366,989.63/x
  3. Step 3: Cross multiply
    608,691.54x = 840,009.94 × 366,989.63
  4. Step 4: Simplify right side
    608,691.54x = 308,274,937,076.92
  5. Step 5: Solve for x
    x = 308,274,937,076.92/608,691.54
  6. Step 6: Final answer
    x = 506,455.10

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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.