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Finding the Third Proportional to 621,655.50 and 928,642.50

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Solution

The third proportional to 621,655.50 and 928,642.50 is: 1,387,226.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,655.50 : 928,642.50 = 928,642.50 : x
  2. Step 2: Convert to fraction form
    621,655.50/928,642.50 = 928,642.50/x
  3. Step 3: Cross multiply
    621,655.50x = 928,642.50 × 928,642.50
  4. Step 4: Simplify right side
    621,655.50x = 862,376,892,806.25
  5. Step 5: Solve for x
    x = 862,376,892,806.25/621,655.50
  6. Step 6: Final answer
    x = 1,387,226.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.