Home / 858,511,965.60-1,288,193,101.20-490,329,640.80

Finding the Fourth Proportional to 858,511,965.60, 1,288,193,101.20 and 490,329,640.80

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Solution

The fourth proportional to 858,511,965.60, 1,288,193,101.20 and 490,329,640.80 is: 735,737,282.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,511,965.60 : 1,288,193,101.20 = 490,329,640.80 : x
  2. Step 2: Convert to fraction form
    858,511,965.60/1,288,193,101.20 = 490,329,640.80/x
  3. Step 3: Cross multiply
    858,511,965.60x = 1,288,193,101.20 × 490,329,640.80
  4. Step 4: Simplify right side
    858,511,965.60x = 631,639,260,592,434,048
  5. Step 5: Solve for x
    x = 631,639,260,592,434,048/858,511,965.60
  6. Step 6: Final answer
    x = 735,737,282.53

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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.