Home / 485,845.36-670,436.19-268,056.61

Finding the Fourth Proportional to 485,845.36, 670,436.19 and 268,056.61

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Solution

The fourth proportional to 485,845.36, 670,436.19 and 268,056.61 is: 369,901.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,845.36 : 670,436.19 = 268,056.61 : x
  2. Step 2: Convert to fraction form
    485,845.36/670,436.19 = 268,056.61/x
  3. Step 3: Cross multiply
    485,845.36x = 670,436.19 × 268,056.61
  4. Step 4: Simplify right side
    485,845.36x = 179,714,850,636.63
  5. Step 5: Solve for x
    x = 179,714,850,636.63/485,845.36
  6. Step 6: Final answer
    x = 369,901.34

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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.