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Finding the Fourth Proportional to 528,023.60, 790,285.80 and 486,033.20

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Solution

The fourth proportional to 528,023.60, 790,285.80 and 486,033.20 is: 727,439.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,023.60 : 790,285.80 = 486,033.20 : x
  2. Step 2: Convert to fraction form
    528,023.60/790,285.80 = 486,033.20/x
  3. Step 3: Cross multiply
    528,023.60x = 790,285.80 × 486,033.20
  4. Step 4: Simplify right side
    528,023.60x = 384,105,136,288.56
  5. Step 5: Solve for x
    x = 384,105,136,288.56/528,023.60
  6. Step 6: Final answer
    x = 727,439.33

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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.