Home / 280,600,848,005.20-420,901,272,007.80-252,193,838,520.40

Finding the Fourth Proportional to 280,600,848,005.20, 420,901,272,007.80 and 252,193,838,520.40

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Solution

The fourth proportional to 280,600,848,005.20, 420,901,272,007.80 and 252,193,838,520.40 is: 378,290,757,780.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,600,848,005.20 : 420,901,272,007.80 = 252,193,838,520.40 : x
  2. Step 2: Convert to fraction form
    280,600,848,005.20/420,901,272,007.80 = 252,193,838,520.40/x
  3. Step 3: Cross multiply
    280,600,848,005.20x = 420,901,272,007.80 × 252,193,838,520.40
  4. Step 4: Simplify right side
    280,600,848,005.20x = 106,148,707,425,766,059,540,480
  5. Step 5: Solve for x
    x = 106,148,707,425,766,059,540,480/280,600,848,005.20
  6. Step 6: Final answer
    x = 378,290,757,780.60

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1.5x scale

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.