Home / 484,320.89-668,287.33-280,331.91

Finding the Fourth Proportional to 484,320.89, 668,287.33 and 280,331.91

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Solution

The fourth proportional to 484,320.89, 668,287.33 and 280,331.91 is: 386,814.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,320.89 : 668,287.33 = 280,331.91 : x
  2. Step 2: Convert to fraction form
    484,320.89/668,287.33 = 280,331.91/x
  3. Step 3: Cross multiply
    484,320.89x = 668,287.33 × 280,331.91
  4. Step 4: Simplify right side
    484,320.89x = 187,342,262,946.87
  5. Step 5: Solve for x
    x = 187,342,262,946.87/484,320.89
  6. Step 6: Final answer
    x = 386,814.33

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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.