Home / 1,121,010,386.20-1,681,515,579.30-654,192,611.80

Finding the Fourth Proportional to 1,121,010,386.20, 1,681,515,579.30 and 654,192,611.80

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Solution

The fourth proportional to 1,121,010,386.20, 1,681,515,579.30 and 654,192,611.80 is: 981,288,917.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,010,386.20 : 1,681,515,579.30 = 654,192,611.80 : x
  2. Step 2: Convert to fraction form
    1,121,010,386.20/1,681,515,579.30 = 654,192,611.80/x
  3. Step 3: Cross multiply
    1,121,010,386.20x = 1,681,515,579.30 × 654,192,611.80
  4. Step 4: Simplify right side
    1,121,010,386.20x = 1,100,035,068,604,656,896
  5. Step 5: Solve for x
    x = 1,100,035,068,604,656,896/1,121,010,386.20
  6. Step 6: Final answer
    x = 981,288,917.70

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Double scale
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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.