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Finding the Fourth Proportional to 474,346.80, 709,792.20 and 349,930.80

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Solution

The fourth proportional to 474,346.80, 709,792.20 and 349,930.80 is: 523,621.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,346.80 : 709,792.20 = 349,930.80 : x
  2. Step 2: Convert to fraction form
    474,346.80/709,792.20 = 349,930.80/x
  3. Step 3: Cross multiply
    474,346.80x = 709,792.20 × 349,930.80
  4. Step 4: Simplify right side
    474,346.80x = 248,378,152,379.76
  5. Step 5: Solve for x
    x = 248,378,152,379.76/474,346.80
  6. Step 6: Final answer
    x = 523,621.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.