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Finding the Fourth Proportional to 486,893.20, 729,027.60 and 353,048.80

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Solution

The fourth proportional to 486,893.20, 729,027.60 and 353,048.80 is: 528,621.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,893.20 : 729,027.60 = 353,048.80 : x
  2. Step 2: Convert to fraction form
    486,893.20/729,027.60 = 353,048.80/x
  3. Step 3: Cross multiply
    486,893.20x = 729,027.60 × 353,048.80
  4. Step 4: Simplify right side
    486,893.20x = 257,382,319,346.88
  5. Step 5: Solve for x
    x = 257,382,319,346.88/486,893.20
  6. Step 6: Final answer
    x = 528,621.72

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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.