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Finding the Third Proportional to 611,448.75 and 915,715.13

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Solution

The third proportional to 611,448.75 and 915,715.13 is: 1,371,389.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,448.75 : 915,715.13 = 915,715.13 : x
  2. Step 2: Convert to fraction form
    611,448.75/915,715.13 = 915,715.13/x
  3. Step 3: Cross multiply
    611,448.75x = 915,715.13 × 915,715.13
  4. Step 4: Simplify right side
    611,448.75x = 838,534,190,153.77
  5. Step 5: Solve for x
    x = 838,534,190,153.77/611,448.75
  6. Step 6: Final answer
    x = 1,371,389.16

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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.