Home / 285,720,709.44-428,535,151.71-78,410,692.92

Finding the Fourth Proportional to 285,720,709.44, 428,535,151.71 and 78,410,692.92

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Solution

The fourth proportional to 285,720,709.44, 428,535,151.71 and 78,410,692.92 is: 117,603,439.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,720,709.44 : 428,535,151.71 = 78,410,692.92 : x
  2. Step 2: Convert to fraction form
    285,720,709.44/428,535,151.71 = 78,410,692.92/x
  3. Step 3: Cross multiply
    285,720,709.44x = 428,535,151.71 × 78,410,692.92
  4. Step 4: Simplify right side
    285,720,709.44x = 33,601,738,186,158,420
  5. Step 5: Solve for x
    x = 33,601,738,186,158,420/285,720,709.44
  6. Step 6: Final answer
    x = 117,603,439.57

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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.