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Finding the Third Proportional to 915,715.13 and 1,989,076.50

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Solution

The third proportional to 915,715.13 and 1,989,076.50 is: 4,320,585.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,715.13 : 1,989,076.50 = 1,989,076.50 : x
  2. Step 2: Convert to fraction form
    915,715.13/1,989,076.50 = 1,989,076.50/x
  3. Step 3: Cross multiply
    915,715.13x = 1,989,076.50 × 1,989,076.50
  4. Step 4: Simplify right side
    915,715.13x = 3,956,425,322,852.25
  5. Step 5: Solve for x
    x = 3,956,425,322,852.25/915,715.13
  6. Step 6: Final answer
    x = 4,320,585.32

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.