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Finding the Third Proportional to 781,690.50 and 1,238,782.50

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Solution

The third proportional to 781,690.50 and 1,238,782.50 is: 1,963,158.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,690.50 : 1,238,782.50 = 1,238,782.50 : x
  2. Step 2: Convert to fraction form
    781,690.50/1,238,782.50 = 1,238,782.50/x
  3. Step 3: Cross multiply
    781,690.50x = 1,238,782.50 × 1,238,782.50
  4. Step 4: Simplify right side
    781,690.50x = 1,534,582,082,306.25
  5. Step 5: Solve for x
    x = 1,534,582,082,306.25/781,690.50
  6. Step 6: Final answer
    x = 1,963,158.16

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.