Home / 484,120.72-668,039.79-280,130.95

Finding the Fourth Proportional to 484,120.72, 668,039.79 and 280,130.95

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Solution

The fourth proportional to 484,120.72, 668,039.79 and 280,130.95 is: 386,553.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,120.72 : 668,039.79 = 280,130.95 : x
  2. Step 2: Convert to fraction form
    484,120.72/668,039.79 = 280,130.95/x
  3. Step 3: Cross multiply
    484,120.72x = 668,039.79 × 280,130.95
  4. Step 4: Simplify right side
    484,120.72x = 187,138,621,010.50
  5. Step 5: Solve for x
    x = 187,138,621,010.50/484,120.72
  6. Step 6: Final answer
    x = 386,553.63

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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.