Home / 1,320,795,126.56-1,981,140,981.61-447,396,493.72

Finding the Fourth Proportional to 1,320,795,126.56, 1,981,140,981.61 and 447,396,493.72

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Solution

The fourth proportional to 1,320,795,126.56, 1,981,140,981.61 and 447,396,493.72 is: 671,077,225.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,795,126.56 : 1,981,140,981.61 = 447,396,493.72 : x
  2. Step 2: Convert to fraction form
    1,320,795,126.56/1,981,140,981.61 = 447,396,493.72/x
  3. Step 3: Cross multiply
    1,320,795,126.56x = 1,981,140,981.61 × 447,396,493.72
  4. Step 4: Simplify right side
    1,320,795,126.56x = 886,355,528,725,805,568
  5. Step 5: Solve for x
    x = 886,355,528,725,805,568/1,320,795,126.56
  6. Step 6: Final answer
    x = 671,077,225.30

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Double scale
Find fourth proportional to 1,320,795,127.56, 1,981,140,983.11 and 447,396,494.72
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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.