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Finding the Fourth Proportional to 1,555,606, 2,146,737.72 and 840,214

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Solution

The fourth proportional to 1,555,606, 2,146,737.72 and 840,214 is: 1,159,496.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555,606 : 2,146,737.72 = 840,214 : x
  2. Step 2: Convert to fraction form
    1,555,606/2,146,737.72 = 840,214/x
  3. Step 3: Cross multiply
    1,555,606x = 2,146,737.72 × 840,214
  4. Step 4: Simplify right side
    1,555,606x = 1,803,719,086,672.08
  5. Step 5: Solve for x
    x = 1,803,719,086,672.08/1,555,606
  6. Step 6: Final answer
    x = 1,159,496.10

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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.