Home / 1,310,198,889.60-1,965,298,334.40-621,451,353.60

Finding the Fourth Proportional to 1,310,198,889.60, 1,965,298,334.40 and 621,451,353.60

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Solution

The fourth proportional to 1,310,198,889.60, 1,965,298,334.40 and 621,451,353.60 is: 932,177,030.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,198,889.60 : 1,965,298,334.40 = 621,451,353.60 : x
  2. Step 2: Convert to fraction form
    1,310,198,889.60/1,965,298,334.40 = 621,451,353.60/x
  3. Step 3: Cross multiply
    1,310,198,889.60x = 1,965,298,334.40 × 621,451,353.60
  4. Step 4: Simplify right side
    1,310,198,889.60x = 1,221,337,310,140,705,536
  5. Step 5: Solve for x
    x = 1,221,337,310,140,705,536/1,310,198,889.60
  6. Step 6: Final answer
    x = 932,177,030.40

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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.