Home / 707,979,977.20-977,016,463.14-394,733,692.72

Finding the Fourth Proportional to 707,979,977.20, 977,016,463.14 and 394,733,692.72

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Solution

The fourth proportional to 707,979,977.20, 977,016,463.14 and 394,733,692.72 is: 544,734,778.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,979,977.20 : 977,016,463.14 = 394,733,692.72 : x
  2. Step 2: Convert to fraction form
    707,979,977.20/977,016,463.14 = 394,733,692.72/x
  3. Step 3: Cross multiply
    707,979,977.20x = 977,016,463.14 × 394,733,692.72
  4. Step 4: Simplify right side
    707,979,977.20x = 385,661,316,343,486,016
  5. Step 5: Solve for x
    x = 385,661,316,343,486,016/707,979,977.20
  6. Step 6: Final answer
    x = 544,734,778.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.