Home / 743,636.66-1,025,840.84-485,664.59

Finding the Fourth Proportional to 743,636.66, 1,025,840.84 and 485,664.59

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Solution

The fourth proportional to 743,636.66, 1,025,840.84 and 485,664.59 is: 669,970.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,636.66 : 1,025,840.84 = 485,664.59 : x
  2. Step 2: Convert to fraction form
    743,636.66/1,025,840.84 = 485,664.59/x
  3. Step 3: Cross multiply
    743,636.66x = 1,025,840.84 × 485,664.59
  4. Step 4: Simplify right side
    743,636.66x = 498,214,571,100.14
  5. Step 5: Solve for x
    x = 498,214,571,100.14/743,636.66
  6. Step 6: Final answer
    x = 669,970.43

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Double scale
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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.