Home / 869,244,976.78-1,199,870,088.41-516,820,126.74

Finding the Fourth Proportional to 869,244,976.78, 1,199,870,088.41 and 516,820,126.74

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Solution

The fourth proportional to 869,244,976.78, 1,199,870,088.41 and 516,820,126.74 is: 713,397,290.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,244,976.78 : 1,199,870,088.41 = 516,820,126.74 : x
  2. Step 2: Convert to fraction form
    869,244,976.78/1,199,870,088.41 = 516,820,126.74/x
  3. Step 3: Cross multiply
    869,244,976.78x = 1,199,870,088.41 × 516,820,126.74
  4. Step 4: Simplify right side
    869,244,976.78x = 620,117,011,163,591,296
  5. Step 5: Solve for x
    x = 620,117,011,163,591,296/869,244,976.78
  6. Step 6: Final answer
    x = 713,397,290.44

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Double scale
Find fourth proportional to 869,244,977.78, 1,199,870,089.79 and 516,820,127.74
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.