Home / 657,578,012.36-984,994,424.13-394,428,014.15

Finding the Fourth Proportional to 657,578,012.36, 984,994,424.13 and 394,428,014.15

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Solution

The fourth proportional to 657,578,012.36, 984,994,424.13 and 394,428,014.15 is: 590,818,712.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,578,012.36 : 984,994,424.13 = 394,428,014.15 : x
  2. Step 2: Convert to fraction form
    657,578,012.36/984,994,424.13 = 394,428,014.15/x
  3. Step 3: Cross multiply
    657,578,012.36x = 984,994,424.13 × 394,428,014.15
  4. Step 4: Simplify right side
    657,578,012.36x = 388,509,394,658,418,688
  5. Step 5: Solve for x
    x = 388,509,394,658,418,688/657,578,012.36
  6. Step 6: Final answer
    x = 590,818,712.54

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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.