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Finding the Third Proportional to 288,776,979.75 and 630,471,691.50

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Solution

The third proportional to 288,776,979.75 and 630,471,691.50 is: 1,376,475,902.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,776,979.75 : 630,471,691.50 = 630,471,691.50 : x
  2. Step 2: Convert to fraction form
    288,776,979.75/630,471,691.50 = 630,471,691.50/x
  3. Step 3: Cross multiply
    288,776,979.75x = 630,471,691.50 × 630,471,691.50
  4. Step 4: Simplify right side
    288,776,979.75x = 397,494,553,782,871,168
  5. Step 5: Solve for x
    x = 397,494,553,782,871,168/288,776,979.75
  6. Step 6: Final answer
    x = 1,376,475,902.36

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.