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Finding the Fourth Proportional to 515,129.74, 710,922.71 and 285,760.94

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Solution

The fourth proportional to 515,129.74, 710,922.71 and 285,760.94 is: 394,374.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,129.74 : 710,922.71 = 285,760.94 : x
  2. Step 2: Convert to fraction form
    515,129.74/710,922.71 = 285,760.94/x
  3. Step 3: Cross multiply
    515,129.74x = 710,922.71 × 285,760.94
  4. Step 4: Simplify right side
    515,129.74x = 203,153,940,634.36
  5. Step 5: Solve for x
    x = 203,153,940,634.36/515,129.74
  6. Step 6: Final answer
    x = 394,374.32

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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.