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Finding the Third Proportional to 487,947 and 738,724.50

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Solution

The third proportional to 487,947 and 738,724.50 is: 1,118,387.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,947 : 738,724.50 = 738,724.50 : x
  2. Step 2: Convert to fraction form
    487,947/738,724.50 = 738,724.50/x
  3. Step 3: Cross multiply
    487,947x = 738,724.50 × 738,724.50
  4. Step 4: Simplify right side
    487,947x = 545,713,886,900.25
  5. Step 5: Solve for x
    x = 545,713,886,900.25/487,947
  6. Step 6: Final answer
    x = 1,118,387.63

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.