Home / 1,310,705,811.20-1,964,736,019.20-654,647,801.60

Finding the Fourth Proportional to 1,310,705,811.20, 1,964,736,019.20 and 654,647,801.60

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Solution

The fourth proportional to 1,310,705,811.20, 1,964,736,019.20 and 654,647,801.60 is: 981,311,065.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,705,811.20 : 1,964,736,019.20 = 654,647,801.60 : x
  2. Step 2: Convert to fraction form
    1,310,705,811.20/1,964,736,019.20 = 654,647,801.60/x
  3. Step 3: Cross multiply
    1,310,705,811.20x = 1,964,736,019.20 × 654,647,801.60
  4. Step 4: Simplify right side
    1,310,705,811.20x = 1,286,210,115,693,615,360
  5. Step 5: Solve for x
    x = 1,286,210,115,693,615,360/1,310,705,811.20
  6. Step 6: Final answer
    x = 981,311,065.16

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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.