Home / 515,055.72-710,778.48-285,629.16

Finding the Fourth Proportional to 515,055.72, 710,778.48 and 285,629.16

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Solution

The fourth proportional to 515,055.72, 710,778.48 and 285,629.16 is: 394,169.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,055.72 : 710,778.48 = 285,629.16 : x
  2. Step 2: Convert to fraction form
    515,055.72/710,778.48 = 285,629.16/x
  3. Step 3: Cross multiply
    515,055.72x = 710,778.48 × 285,629.16
  4. Step 4: Simplify right side
    515,055.72x = 203,019,060,188.48
  5. Step 5: Solve for x
    x = 203,019,060,188.48/515,055.72
  6. Step 6: Final answer
    x = 394,169.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.