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Finding the Third Proportional to 555,111 and 830,427.75

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Solution

The third proportional to 555,111 and 830,427.75 is: 1,242,292.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,111 : 830,427.75 = 830,427.75 : x
  2. Step 2: Convert to fraction form
    555,111/830,427.75 = 830,427.75/x
  3. Step 3: Cross multiply
    555,111x = 830,427.75 × 830,427.75
  4. Step 4: Simplify right side
    555,111x = 689,610,247,970.06
  5. Step 5: Solve for x
    x = 689,610,247,970.06/555,111
  6. Step 6: Final answer
    x = 1,242,292.53

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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.