Home / 391,203,290.80-586,804,936.20-118,538,628.40

Finding the Fourth Proportional to 391,203,290.80, 586,804,936.20 and 118,538,628.40

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Solution

The fourth proportional to 391,203,290.80, 586,804,936.20 and 118,538,628.40 is: 177,807,942.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,203,290.80 : 586,804,936.20 = 118,538,628.40 : x
  2. Step 2: Convert to fraction form
    391,203,290.80/586,804,936.20 = 118,538,628.40/x
  3. Step 3: Cross multiply
    391,203,290.80x = 586,804,936.20 × 118,538,628.40
  4. Step 4: Simplify right side
    391,203,290.80x = 69,559,052,275,497,520
  5. Step 5: Solve for x
    x = 69,559,052,275,497,520/391,203,290.80
  6. Step 6: Final answer
    x = 177,807,942.60

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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.