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Finding the Third Proportional to 875,818 and 1,319,991

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Solution

The third proportional to 875,818 and 1,319,991 is: 1,989,427.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,818 : 1,319,991 = 1,319,991 : x
  2. Step 2: Convert to fraction form
    875,818/1,319,991 = 1,319,991/x
  3. Step 3: Cross multiply
    875,818x = 1,319,991 × 1,319,991
  4. Step 4: Simplify right side
    875,818x = 1,742,376,240,081
  5. Step 5: Solve for x
    x = 1,742,376,240,081/875,818
  6. Step 6: Final answer
    x = 1,989,427.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.