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Finding the Fourth Proportional to 878,470, 1,212,288.66 and 476,062

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Solution

The fourth proportional to 878,470, 1,212,288.66 and 476,062 is: 656,965.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,470 : 1,212,288.66 = 476,062 : x
  2. Step 2: Convert to fraction form
    878,470/1,212,288.66 = 476,062/x
  3. Step 3: Cross multiply
    878,470x = 1,212,288.66 × 476,062
  4. Step 4: Simplify right side
    878,470x = 577,124,564,056.92
  5. Step 5: Solve for x
    x = 577,124,564,056.92/878,470
  6. Step 6: Final answer
    x = 656,965.59

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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.