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Finding the Third Proportional to 278,083,840.50 and 420,704,802

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Solution

The third proportional to 278,083,840.50 and 420,704,802 is: 636,471,828.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,083,840.50 : 420,704,802 = 420,704,802 : x
  2. Step 2: Convert to fraction form
    278,083,840.50/420,704,802 = 420,704,802/x
  3. Step 3: Cross multiply
    278,083,840.50x = 420,704,802 × 420,704,802
  4. Step 4: Simplify right side
    278,083,840.50x = 176,992,530,425,859,200
  5. Step 5: Solve for x
    x = 176,992,530,425,859,200/278,083,840.50
  6. Step 6: Final answer
    x = 636,471,828.45

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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.