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Finding the Fourth Proportional to 515,069.52, 710,797.60 and 285,643.20

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Solution

The fourth proportional to 515,069.52, 710,797.60 and 285,643.20 is: 394,188.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,069.52 : 710,797.60 = 285,643.20 : x
  2. Step 2: Convert to fraction form
    515,069.52/710,797.60 = 285,643.20/x
  3. Step 3: Cross multiply
    515,069.52x = 710,797.60 × 285,643.20
  4. Step 4: Simplify right side
    515,069.52x = 203,034,501,016.32
  5. Step 5: Solve for x
    x = 203,034,501,016.32/515,069.52
  6. Step 6: Final answer
    x = 394,188.54

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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.