Home / 378,692,731.20-567,707,320.80-257,130,004.80

Finding the Fourth Proportional to 378,692,731.20, 567,707,320.80 and 257,130,004.80

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Solution

The fourth proportional to 378,692,731.20, 567,707,320.80 and 257,130,004.80 is: 385,469,733.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,692,731.20 : 567,707,320.80 = 257,130,004.80 : x
  2. Step 2: Convert to fraction form
    378,692,731.20/567,707,320.80 = 257,130,004.80/x
  3. Step 3: Cross multiply
    378,692,731.20x = 567,707,320.80 × 257,130,004.80
  4. Step 4: Simplify right side
    378,692,731.20x = 145,974,586,122,299,136
  5. Step 5: Solve for x
    x = 145,974,586,122,299,136/378,692,731.20
  6. Step 6: Final answer
    x = 385,469,733.36

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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.