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Finding the Third Proportional to 555,124 and 878,154

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Solution

The third proportional to 555,124 and 878,154 is: 1,389,157.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,124 : 878,154 = 878,154 : x
  2. Step 2: Convert to fraction form
    555,124/878,154 = 878,154/x
  3. Step 3: Cross multiply
    555,124x = 878,154 × 878,154
  4. Step 4: Simplify right side
    555,124x = 771,154,447,716
  5. Step 5: Solve for x
    x = 771,154,447,716/555,124
  6. Step 6: Final answer
    x = 1,389,157.10

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.