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Finding the Fourth Proportional to 528,044.60, 790,317.30 and 486,054.20

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Solution

The fourth proportional to 528,044.60, 790,317.30 and 486,054.20 is: 727,470.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,044.60 : 790,317.30 = 486,054.20 : x
  2. Step 2: Convert to fraction form
    528,044.60/790,317.30 = 486,054.20/x
  3. Step 3: Cross multiply
    528,044.60x = 790,317.30 × 486,054.20
  4. Step 4: Simplify right side
    528,044.60x = 384,137,042,997.66
  5. Step 5: Solve for x
    x = 384,137,042,997.66/528,044.60
  6. Step 6: Final answer
    x = 727,470.83

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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.