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Finding the Fourth Proportional to 515,125.62, 710,879.22 and 285,687.45

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Solution

The fourth proportional to 515,125.62, 710,879.22 and 285,687.45 is: 394,251.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,125.62 : 710,879.22 = 285,687.45 : x
  2. Step 2: Convert to fraction form
    515,125.62/710,879.22 = 285,687.45/x
  3. Step 3: Cross multiply
    515,125.62x = 710,879.22 × 285,687.45
  4. Step 4: Simplify right side
    515,125.62x = 203,089,271,619.79
  5. Step 5: Solve for x
    x = 203,089,271,619.79/515,125.62
  6. Step 6: Final answer
    x = 394,251.93

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1.5x scale

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.