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Finding the Third Proportional to 887,210 and 1,389,903

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Solution

The third proportional to 887,210 and 1,389,903 is: 2,177,421.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,210 : 1,389,903 = 1,389,903 : x
  2. Step 2: Convert to fraction form
    887,210/1,389,903 = 1,389,903/x
  3. Step 3: Cross multiply
    887,210x = 1,389,903 × 1,389,903
  4. Step 4: Simplify right side
    887,210x = 1,931,830,349,409
  5. Step 5: Solve for x
    x = 1,931,830,349,409/887,210
  6. Step 6: Final answer
    x = 2,177,421.75

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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.