Home / 485,929.96-727,961.82-285,827.56

Finding the Fourth Proportional to 485,929.96, 727,961.82 and 285,827.56

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Solution

The fourth proportional to 485,929.96, 727,961.82 and 285,827.56 is: 428,192.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,929.96 : 727,961.82 = 285,827.56 : x
  2. Step 2: Convert to fraction form
    485,929.96/727,961.82 = 285,827.56/x
  3. Step 3: Cross multiply
    485,929.96x = 727,961.82 × 285,827.56
  4. Step 4: Simplify right side
    485,929.96x = 208,071,550,783.76
  5. Step 5: Solve for x
    x = 208,071,550,783.76/485,929.96
  6. Step 6: Final answer
    x = 428,192.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.