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Finding the Fourth Proportional to 484,441.92, 668,501.40 and 280,478.25

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Solution

The fourth proportional to 484,441.92, 668,501.40 and 280,478.25 is: 387,043.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,441.92 : 668,501.40 = 280,478.25 : x
  2. Step 2: Convert to fraction form
    484,441.92/668,501.40 = 280,478.25/x
  3. Step 3: Cross multiply
    484,441.92x = 668,501.40 × 280,478.25
  4. Step 4: Simplify right side
    484,441.92x = 187,500,102,794.55
  5. Step 5: Solve for x
    x = 187,500,102,794.55/484,441.92
  6. Step 6: Final answer
    x = 387,043.51

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1.5x scale

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.