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Finding the Fourth Proportional to 647,558,486.81, 893,633,404.21 and 350,200,728.98

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Solution

The fourth proportional to 647,558,486.81, 893,633,404.21 and 350,200,728.98 is: 483,278,462.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,558,486.81 : 893,633,404.21 = 350,200,728.98 : x
  2. Step 2: Convert to fraction form
    647,558,486.81/893,633,404.21 = 350,200,728.98/x
  3. Step 3: Cross multiply
    647,558,486.81x = 893,633,404.21 × 350,200,728.98
  4. Step 4: Simplify right side
    647,558,486.81x = 312,951,069,596,579,584
  5. Step 5: Solve for x
    x = 312,951,069,596,579,584/647,558,486.81
  6. Step 6: Final answer
    x = 483,278,462.05

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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.