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Finding the Fourth Proportional to 529,620.40, 794,430.60 and 486,074.80

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Solution

The fourth proportional to 529,620.40, 794,430.60 and 486,074.80 is: 729,112.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,620.40 : 794,430.60 = 486,074.80 : x
  2. Step 2: Convert to fraction form
    529,620.40/794,430.60 = 486,074.80/x
  3. Step 3: Cross multiply
    529,620.40x = 794,430.60 × 486,074.80
  4. Step 4: Simplify right side
    529,620.40x = 386,152,695,008.88
  5. Step 5: Solve for x
    x = 386,152,695,008.88/529,620.40
  6. Step 6: Final answer
    x = 729,112.20

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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.