Home / 513,843,147-709,104,322.08-278,893,893.42

Finding the Fourth Proportional to 513,843,147, 709,104,322.08 and 278,893,893.42

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Solution

The fourth proportional to 513,843,147, 709,104,322.08 and 278,893,893.42 is: 384,873,995.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,843,147 : 709,104,322.08 = 278,893,893.42 : x
  2. Step 2: Convert to fraction form
    513,843,147/709,104,322.08 = 278,893,893.42/x
  3. Step 3: Cross multiply
    513,843,147x = 709,104,322.08 × 278,893,893.42
  4. Step 4: Simplify right side
    513,843,147x = 197,764,865,225,840,896
  5. Step 5: Solve for x
    x = 197,764,865,225,840,896/513,843,147
  6. Step 6: Final answer
    x = 384,873,995.85

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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.