Home / 484,320.39-668,286.64-280,331.41

Finding the Fourth Proportional to 484,320.39, 668,286.64 and 280,331.41

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Solution

The fourth proportional to 484,320.39, 668,286.64 and 280,331.41 is: 386,813.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,320.39 : 668,286.64 = 280,331.41 : x
  2. Step 2: Convert to fraction form
    484,320.39/668,286.64 = 280,331.41/x
  3. Step 3: Cross multiply
    484,320.39x = 668,286.64 × 280,331.41
  4. Step 4: Simplify right side
    484,320.39x = 187,341,736,075.36
  5. Step 5: Solve for x
    x = 187,341,736,075.36/484,320.39
  6. Step 6: Final answer
    x = 386,813.65

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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.