Home / 1,289,944,819.20-1,934,917,228.80-707,453,990.40

Finding the Fourth Proportional to 1,289,944,819.20, 1,934,917,228.80 and 707,453,990.40

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Solution

The fourth proportional to 1,289,944,819.20, 1,934,917,228.80 and 707,453,990.40 is: 1,061,180,985.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,944,819.20 : 1,934,917,228.80 = 707,453,990.40 : x
  2. Step 2: Convert to fraction form
    1,289,944,819.20/1,934,917,228.80 = 707,453,990.40/x
  3. Step 3: Cross multiply
    1,289,944,819.20x = 1,934,917,228.80 × 707,453,990.40
  4. Step 4: Simplify right side
    1,289,944,819.20x = 1,368,864,914,608,269,824
  5. Step 5: Solve for x
    x = 1,368,864,914,608,269,824/1,289,944,819.20
  6. Step 6: Final answer
    x = 1,061,180,985.60

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Double scale
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Similar ratio
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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.