Home / 743,685.59-1,025,908.37-485,713.68

Finding the Fourth Proportional to 743,685.59, 1,025,908.37 and 485,713.68

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Solution

The fourth proportional to 743,685.59, 1,025,908.37 and 485,713.68 is: 670,038.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,685.59 : 1,025,908.37 = 485,713.68 : x
  2. Step 2: Convert to fraction form
    743,685.59/1,025,908.37 = 485,713.68/x
  3. Step 3: Cross multiply
    743,685.59x = 1,025,908.37 × 485,713.68
  4. Step 4: Simplify right side
    743,685.59x = 498,297,728,772.97
  5. Step 5: Solve for x
    x = 498,297,728,772.97/743,685.59
  6. Step 6: Final answer
    x = 670,038.16

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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.