Home / 405,735,862.50-608,702,847.84-129,387,084.39

Finding the Fourth Proportional to 405,735,862.50, 608,702,847.84 and 129,387,084.39

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Solution

The fourth proportional to 405,735,862.50, 608,702,847.84 and 129,387,084.39 is: 194,112,214.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,735,862.50 : 608,702,847.84 = 129,387,084.39 : x
  2. Step 2: Convert to fraction form
    405,735,862.50/608,702,847.84 = 129,387,084.39/x
  3. Step 3: Cross multiply
    405,735,862.50x = 608,702,847.84 × 129,387,084.39
  4. Step 4: Simplify right side
    405,735,862.50x = 78,758,286,741,907,408
  5. Step 5: Solve for x
    x = 78,758,286,741,907,408/405,735,862.50
  6. Step 6: Final answer
    x = 194,112,214.43

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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.