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Finding the Fourth Proportional to 697,370.42, 962,385.36 and 391,468.84

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Solution

The fourth proportional to 697,370.42, 962,385.36 and 391,468.84 is: 540,234.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,370.42 : 962,385.36 = 391,468.84 : x
  2. Step 2: Convert to fraction form
    697,370.42/962,385.36 = 391,468.84/x
  3. Step 3: Cross multiply
    697,370.42x = 962,385.36 × 391,468.84
  4. Step 4: Simplify right side
    697,370.42x = 376,743,880,512.18
  5. Step 5: Solve for x
    x = 376,743,880,512.18/697,370.42
  6. Step 6: Final answer
    x = 540,234.96

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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.