Home / 394,657,603.20-591,986,404.80-388,610,985.60

Finding the Fourth Proportional to 394,657,603.20, 591,986,404.80 and 388,610,985.60

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Solution

The fourth proportional to 394,657,603.20, 591,986,404.80 and 388,610,985.60 is: 582,916,478.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,657,603.20 : 591,986,404.80 = 388,610,985.60 : x
  2. Step 2: Convert to fraction form
    394,657,603.20/591,986,404.80 = 388,610,985.60/x
  3. Step 3: Cross multiply
    394,657,603.20x = 591,986,404.80 × 388,610,985.60
  4. Step 4: Simplify right side
    394,657,603.20x = 230,052,420,231,128,576
  5. Step 5: Solve for x
    x = 230,052,420,231,128,576/394,657,603.20
  6. Step 6: Final answer
    x = 582,916,478.40

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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.