Home / 285,534,734.90-428,303,580.32-129,979,757.05

Finding the Fourth Proportional to 285,534,734.90, 428,303,580.32 and 129,979,757.05

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Solution

The fourth proportional to 285,534,734.90, 428,303,580.32 and 129,979,757.05 is: 194,970,308.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,534,734.90 : 428,303,580.32 = 129,979,757.05 : x
  2. Step 2: Convert to fraction form
    285,534,734.90/428,303,580.32 = 129,979,757.05/x
  3. Step 3: Cross multiply
    285,534,734.90x = 428,303,580.32 × 129,979,757.05
  4. Step 4: Simplify right side
    285,534,734.90x = 55,670,795,312,892,952
  5. Step 5: Solve for x
    x = 55,670,795,312,892,952/285,534,734.90
  6. Step 6: Final answer
    x = 194,970,308.37

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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.