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Finding the Fourth Proportional to 697,299.43, 962,280.35 and 391,369.68

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Solution

The fourth proportional to 697,299.43, 962,280.35 and 391,369.68 is: 540,094.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,299.43 : 962,280.35 = 391,369.68 : x
  2. Step 2: Convert to fraction form
    697,299.43/962,280.35 = 391,369.68/x
  3. Step 3: Cross multiply
    697,299.43x = 962,280.35 × 391,369.68
  4. Step 4: Simplify right side
    697,299.43x = 376,607,350,692.94
  5. Step 5: Solve for x
    x = 376,607,350,692.94/697,299.43
  6. Step 6: Final answer
    x = 540,094.16

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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.