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Finding the Fourth Proportional to 1,239,225,922.80, 1,856,854,837.80 and 656,199,716.40

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Solution

The fourth proportional to 1,239,225,922.80, 1,856,854,837.80 and 656,199,716.40 is: 983,248,974.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,225,922.80 : 1,856,854,837.80 = 656,199,716.40 : x
  2. Step 2: Convert to fraction form
    1,239,225,922.80/1,856,854,837.80 = 656,199,716.40/x
  3. Step 3: Cross multiply
    1,239,225,922.80x = 1,856,854,837.80 × 656,199,716.40
  4. Step 4: Simplify right side
    1,239,225,922.80x = 1,218,467,617,960,327,936
  5. Step 5: Solve for x
    x = 1,218,467,617,960,327,936/1,239,225,922.80
  6. Step 6: Final answer
    x = 983,248,974.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.