Home / 1,259,718,157.60-1,890,522,020.40-645,986,471.20

Finding the Fourth Proportional to 1,259,718,157.60, 1,890,522,020.40 and 645,986,471.20

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Solution

The fourth proportional to 1,259,718,157.60, 1,890,522,020.40 and 645,986,471.20 is: 969,464,194.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,718,157.60 : 1,890,522,020.40 = 645,986,471.20 : x
  2. Step 2: Convert to fraction form
    1,259,718,157.60/1,890,522,020.40 = 645,986,471.20/x
  3. Step 3: Cross multiply
    1,259,718,157.60x = 1,890,522,020.40 × 645,986,471.20
  4. Step 4: Simplify right side
    1,259,718,157.60x = 1,221,251,648,684,090,624
  5. Step 5: Solve for x
    x = 1,221,251,648,684,090,624/1,259,718,157.60
  6. Step 6: Final answer
    x = 969,464,194.29

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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.