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Finding the Fourth Proportional to 486,880.80, 730,321.20 and 368,782.80

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Solution

The fourth proportional to 486,880.80, 730,321.20 and 368,782.80 is: 553,174.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,880.80 : 730,321.20 = 368,782.80 : x
  2. Step 2: Convert to fraction form
    486,880.80/730,321.20 = 368,782.80/x
  3. Step 3: Cross multiply
    486,880.80x = 730,321.20 × 368,782.80
  4. Step 4: Simplify right side
    486,880.80x = 269,329,897,035.36
  5. Step 5: Solve for x
    x = 269,329,897,035.36/486,880.80
  6. Step 6: Final answer
    x = 553,174.20

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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.