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Finding the Fourth Proportional to 538,892,122.11, 743,666,797.02 and 312,852,079.91

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Solution

The fourth proportional to 538,892,122.11, 743,666,797.02 and 312,852,079.91 is: 431,733,355.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,892,122.11 : 743,666,797.02 = 312,852,079.91 : x
  2. Step 2: Convert to fraction form
    538,892,122.11/743,666,797.02 = 312,852,079.91/x
  3. Step 3: Cross multiply
    538,892,122.11x = 743,666,797.02 × 312,852,079.91
  4. Step 4: Simplify right side
    538,892,122.11x = 232,657,704,204,800,160
  5. Step 5: Solve for x
    x = 232,657,704,204,800,160/538,892,122.11
  6. Step 6: Final answer
    x = 431,733,355.64

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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.