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Finding the Third Proportional to 4,921,890.75 and 7,703,417.25

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Solution

The third proportional to 4,921,890.75 and 7,703,417.25 is: 12,056,878.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921,890.75 : 7,703,417.25 = 7,703,417.25 : x
  2. Step 2: Convert to fraction form
    4,921,890.75/7,703,417.25 = 7,703,417.25/x
  3. Step 3: Cross multiply
    4,921,890.75x = 7,703,417.25 × 7,703,417.25
  4. Step 4: Simplify right side
    4,921,890.75x = 59,342,637,327,597.56
  5. Step 5: Solve for x
    x = 59,342,637,327,597.56/4,921,890.75
  6. Step 6: Final answer
    x = 12,056,878.21

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.