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Finding the Fourth Proportional to 519,784.61, 717,308.75 and 304,928.33

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Solution

The fourth proportional to 519,784.61, 717,308.75 and 304,928.33 is: 420,804.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,784.61 : 717,308.75 = 304,928.33 : x
  2. Step 2: Convert to fraction form
    519,784.61/717,308.75 = 304,928.33/x
  3. Step 3: Cross multiply
    519,784.61x = 717,308.75 × 304,928.33
  4. Step 4: Simplify right side
    519,784.61x = 218,727,757,707.25
  5. Step 5: Solve for x
    x = 218,727,757,707.25/519,784.61
  6. Step 6: Final answer
    x = 420,804.61

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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.