Home / 485,054.70-727,582.05-408,072.30

Finding the Fourth Proportional to 485,054.70, 727,582.05 and 408,072.30

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Solution

The fourth proportional to 485,054.70, 727,582.05 and 408,072.30 is: 612,108.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,054.70 : 727,582.05 = 408,072.30 : x
  2. Step 2: Convert to fraction form
    485,054.70/727,582.05 = 408,072.30/x
  3. Step 3: Cross multiply
    485,054.70x = 727,582.05 × 408,072.30
  4. Step 4: Simplify right side
    485,054.70x = 296,906,080,582.22
  5. Step 5: Solve for x
    x = 296,906,080,582.22/485,054.70
  6. Step 6: Final answer
    x = 612,108.45

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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.