Home / 1,276,516,789.20-1,914,775,183.80-458,655,771.60

Finding the Fourth Proportional to 1,276,516,789.20, 1,914,775,183.80 and 458,655,771.60

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Solution

The fourth proportional to 1,276,516,789.20, 1,914,775,183.80 and 458,655,771.60 is: 687,983,657.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,516,789.20 : 1,914,775,183.80 = 458,655,771.60 : x
  2. Step 2: Convert to fraction form
    1,276,516,789.20/1,914,775,183.80 = 458,655,771.60/x
  3. Step 3: Cross multiply
    1,276,516,789.20x = 1,914,775,183.80 × 458,655,771.60
  4. Step 4: Simplify right side
    1,276,516,789.20x = 878,222,689,366,320,896
  5. Step 5: Solve for x
    x = 878,222,689,366,320,896/1,276,516,789.20
  6. Step 6: Final answer
    x = 687,983,657.40

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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.