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Finding the Fourth Proportional to 619,956,870.48, 855,600,972.84 and 463,051,867.68

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Solution

The fourth proportional to 619,956,870.48, 855,600,972.84 and 463,051,867.68 is: 639,056,759.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,956,870.48 : 855,600,972.84 = 463,051,867.68 : x
  2. Step 2: Convert to fraction form
    619,956,870.48/855,600,972.84 = 463,051,867.68/x
  3. Step 3: Cross multiply
    619,956,870.48x = 855,600,972.84 × 463,051,867.68
  4. Step 4: Simplify right side
    619,956,870.48x = 396,187,628,462,386,944
  5. Step 5: Solve for x
    x = 396,187,628,462,386,944/619,956,870.48
  6. Step 6: Final answer
    x = 639,056,759.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.