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Finding the Fourth Proportional to 513,485.78, 770,003.97 and 243,691.24

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Solution

The fourth proportional to 513,485.78, 770,003.97 and 243,691.24 is: 365,430.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,485.78 : 770,003.97 = 243,691.24 : x
  2. Step 2: Convert to fraction form
    513,485.78/770,003.97 = 243,691.24/x
  3. Step 3: Cross multiply
    513,485.78x = 770,003.97 × 243,691.24
  4. Step 4: Simplify right side
    513,485.78x = 187,643,222,254.22
  5. Step 5: Solve for x
    x = 187,643,222,254.22/513,485.78
  6. Step 6: Final answer
    x = 365,430.22

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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.