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Finding the Fourth Proportional to 685,281.37, 945,695.76 and 379,362.86

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Solution

The fourth proportional to 685,281.37, 945,695.76 and 379,362.86 is: 523,524.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,281.37 : 945,695.76 = 379,362.86 : x
  2. Step 2: Convert to fraction form
    685,281.37/945,695.76 = 379,362.86/x
  3. Step 3: Cross multiply
    685,281.37x = 945,695.76 × 379,362.86
  4. Step 4: Simplify right side
    685,281.37x = 358,761,848,203.47
  5. Step 5: Solve for x
    x = 358,761,848,203.47/685,281.37
  6. Step 6: Final answer
    x = 523,524.89

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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.