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Finding the Fourth Proportional to 808,272, 1,114,838.64 and 686,568.96

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Solution

The fourth proportional to 808,272, 1,114,838.64 and 686,568.96 is: 946,975.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,272 : 1,114,838.64 = 686,568.96 : x
  2. Step 2: Convert to fraction form
    808,272/1,114,838.64 = 686,568.96/x
  3. Step 3: Cross multiply
    808,272x = 1,114,838.64 × 686,568.96
  4. Step 4: Simplify right side
    808,272x = 765,413,605,632.61
  5. Step 5: Solve for x
    x = 765,413,605,632.61/808,272
  6. Step 6: Final answer
    x = 946,975.28

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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.