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Finding the Fourth Proportional to 685,280.87, 945,695.07 and 379,362.35

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Solution

The fourth proportional to 685,280.87, 945,695.07 and 379,362.35 is: 523,524.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,280.87 : 945,695.07 = 379,362.35 : x
  2. Step 2: Convert to fraction form
    685,280.87/945,695.07 = 379,362.35/x
  3. Step 3: Cross multiply
    685,280.87x = 945,695.07 × 379,362.35
  4. Step 4: Simplify right side
    685,280.87x = 358,761,104,138.61
  5. Step 5: Solve for x
    x = 358,761,104,138.61/685,280.87
  6. Step 6: Final answer
    x = 523,524.18

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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.