Home / 458,548,386.84-687,928,839.48-131,028,165.72

Finding the Fourth Proportional to 458,548,386.84, 687,928,839.48 and 131,028,165.72

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Solution

The fourth proportional to 458,548,386.84, 687,928,839.48 and 131,028,165.72 is: 196,572,611.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,548,386.84 : 687,928,839.48 = 131,028,165.72 : x
  2. Step 2: Convert to fraction form
    458,548,386.84/687,928,839.48 = 131,028,165.72/x
  3. Step 3: Cross multiply
    458,548,386.84x = 687,928,839.48 × 131,028,165.72
  4. Step 4: Simplify right side
    458,548,386.84x = 90,138,053,982,952,720
  5. Step 5: Solve for x
    x = 90,138,053,982,952,720/458,548,386.84
  6. Step 6: Final answer
    x = 196,572,611.68

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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.