Home / 408,415,083.40-612,678,612.30-135,757,419.40

Finding the Fourth Proportional to 408,415,083.40, 612,678,612.30 and 135,757,419.40

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Solution

The fourth proportional to 408,415,083.40, 612,678,612.30 and 135,757,419.40 is: 203,654,739.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,415,083.40 : 612,678,612.30 = 135,757,419.40 : x
  2. Step 2: Convert to fraction form
    408,415,083.40/612,678,612.30 = 135,757,419.40/x
  3. Step 3: Cross multiply
    408,415,083.40x = 612,678,612.30 × 135,757,419.40
  4. Step 4: Simplify right side
    408,415,083.40x = 83,175,667,327,421,088
  5. Step 5: Solve for x
    x = 83,175,667,327,421,088/408,415,083.40
  6. Step 6: Final answer
    x = 203,654,739.28

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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.