Home / 776,987,002.40-1,165,144,580.40-388,659,783.20

Finding the Fourth Proportional to 776,987,002.40, 1,165,144,580.40 and 388,659,783.20

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Solution

The fourth proportional to 776,987,002.40, 1,165,144,580.40 and 388,659,783.20 is: 582,821,641.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,987,002.40 : 1,165,144,580.40 = 388,659,783.20 : x
  2. Step 2: Convert to fraction form
    776,987,002.40/1,165,144,580.40 = 388,659,783.20/x
  3. Step 3: Cross multiply
    776,987,002.40x = 1,165,144,580.40 × 388,659,783.20
  4. Step 4: Simplify right side
    776,987,002.40x = 452,844,840,014,918,976
  5. Step 5: Solve for x
    x = 452,844,840,014,918,976/776,987,002.40
  6. Step 6: Final answer
    x = 582,821,641.31

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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.