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Finding the Fourth Proportional to 529,749.20, 794,009.40 and 213,998.80

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Solution

The fourth proportional to 529,749.20, 794,009.40 and 213,998.80 is: 320,750.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,749.20 : 794,009.40 = 213,998.80 : x
  2. Step 2: Convert to fraction form
    529,749.20/794,009.40 = 213,998.80/x
  3. Step 3: Cross multiply
    529,749.20x = 794,009.40 × 213,998.80
  4. Step 4: Simplify right side
    529,749.20x = 169,917,058,788.72
  5. Step 5: Solve for x
    x = 169,917,058,788.72/529,749.20
  6. Step 6: Final answer
    x = 320,750.01

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1.5x scale

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.