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Finding the Third Proportional to 555,110 and 830,428

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Solution

The third proportional to 555,110 and 830,428 is: 1,242,295.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,110 : 830,428 = 830,428 : x
  2. Step 2: Convert to fraction form
    555,110/830,428 = 830,428/x
  3. Step 3: Cross multiply
    555,110x = 830,428 × 830,428
  4. Step 4: Simplify right side
    555,110x = 689,610,663,184
  5. Step 5: Solve for x
    x = 689,610,663,184/555,110
  6. Step 6: Final answer
    x = 1,242,295.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.