Home / 657,578,013.36-984,994,425.63-394,428,015.15

Finding the Fourth Proportional to 657,578,013.36, 984,994,425.63 and 394,428,015.15

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Solution

The fourth proportional to 657,578,013.36, 984,994,425.63 and 394,428,015.15 is: 590,818,714.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,578,013.36 : 984,994,425.63 = 394,428,015.15 : x
  2. Step 2: Convert to fraction form
    657,578,013.36/984,994,425.63 = 394,428,015.15/x
  3. Step 3: Cross multiply
    657,578,013.36x = 984,994,425.63 × 394,428,015.15
  4. Step 4: Simplify right side
    657,578,013.36x = 388,509,396,235,055,168
  5. Step 5: Solve for x
    x = 388,509,396,235,055,168/657,578,013.36
  6. Step 6: Final answer
    x = 590,818,714.04

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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.