Home / 776,878,982.40-1,164,982,550.40-388,551,763.20

Finding the Fourth Proportional to 776,878,982.40, 1,164,982,550.40 and 388,551,763.20

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Solution

The fourth proportional to 776,878,982.40, 1,164,982,550.40 and 388,551,763.20 is: 582,659,634.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,878,982.40 : 1,164,982,550.40 = 388,551,763.20 : x
  2. Step 2: Convert to fraction form
    776,878,982.40/1,164,982,550.40 = 388,551,763.20/x
  3. Step 3: Cross multiply
    776,878,982.40x = 1,164,982,550.40 × 388,551,763.20
  4. Step 4: Simplify right side
    776,878,982.40x = 452,656,024,055,152,896
  5. Step 5: Solve for x
    x = 452,656,024,055,152,896/776,878,982.40
  6. Step 6: Final answer
    x = 582,659,634.65

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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.