Home / 1,278,155,067.60-1,915,909,903.80-694,656,469.20

Finding the Fourth Proportional to 1,278,155,067.60, 1,915,909,903.80 and 694,656,469.20

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Solution

The fourth proportional to 1,278,155,067.60, 1,915,909,903.80 and 694,656,469.20 is: 1,041,265,839.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,155,067.60 : 1,915,909,903.80 = 694,656,469.20 : x
  2. Step 2: Convert to fraction form
    1,278,155,067.60/1,915,909,903.80 = 694,656,469.20/x
  3. Step 3: Cross multiply
    1,278,155,067.60x = 1,915,909,903.80 × 694,656,469.20
  4. Step 4: Simplify right side
    1,278,155,067.60x = 1,330,899,209,079,019,776
  5. Step 5: Solve for x
    x = 1,330,899,209,079,019,776/1,278,155,067.60
  6. Step 6: Final answer
    x = 1,041,265,839.19

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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.