Home / 621,434,908.80-931,372,910.40-329,581,683.84

Finding the Fourth Proportional to 621,434,908.80, 931,372,910.40 and 329,581,683.84

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Solution

The fourth proportional to 621,434,908.80, 931,372,910.40 and 329,581,683.84 is: 493,959,138.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,434,908.80 : 931,372,910.40 = 329,581,683.84 : x
  2. Step 2: Convert to fraction form
    621,434,908.80/931,372,910.40 = 329,581,683.84/x
  3. Step 3: Cross multiply
    621,434,908.80x = 931,372,910.40 × 329,581,683.84
  4. Step 4: Simplify right side
    621,434,908.80x = 306,963,452,092,593,408
  5. Step 5: Solve for x
    x = 306,963,452,092,593,408/621,434,908.80
  6. Step 6: Final answer
    x = 493,959,138.35

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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.