Home / 2,910,720,120.20-4,366,080,180.30-840,509,419.40

Finding the Fourth Proportional to 2,910,720,120.20, 4,366,080,180.30 and 840,509,419.40

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Solution

The fourth proportional to 2,910,720,120.20, 4,366,080,180.30 and 840,509,419.40 is: 1,260,764,129.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,910,720,120.20 : 4,366,080,180.30 = 840,509,419.40 : x
  2. Step 2: Convert to fraction form
    2,910,720,120.20/4,366,080,180.30 = 840,509,419.40/x
  3. Step 3: Cross multiply
    2,910,720,120.20x = 4,366,080,180.30 × 840,509,419.40
  4. Step 4: Simplify right side
    2,910,720,120.20x = 3,669,731,517,397,800,448
  5. Step 5: Solve for x
    x = 3,669,731,517,397,800,448/2,910,720,120.20
  6. Step 6: Final answer
    x = 1,260,764,129.10

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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.