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Finding the Third Proportional to 420,623.06 and 917,373.38

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Solution

The third proportional to 420,623.06 and 917,373.38 is: 2,000,779.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,623.06 : 917,373.38 = 917,373.38 : x
  2. Step 2: Convert to fraction form
    420,623.06/917,373.38 = 917,373.38/x
  3. Step 3: Cross multiply
    420,623.06x = 917,373.38 × 917,373.38
  4. Step 4: Simplify right side
    420,623.06x = 841,573,909,158.89
  5. Step 5: Solve for x
    x = 841,573,909,158.89/420,623.06
  6. Step 6: Final answer
    x = 2,000,779.28

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.