Home / 1,223,723.52-1,688,728.32-687,168

Finding the Fourth Proportional to 1,223,723.52, 1,688,728.32 and 687,168

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Solution

The fourth proportional to 1,223,723.52, 1,688,728.32 and 687,168 is: 948,286.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,723.52 : 1,688,728.32 = 687,168 : x
  2. Step 2: Convert to fraction form
    1,223,723.52/1,688,728.32 = 687,168/x
  3. Step 3: Cross multiply
    1,223,723.52x = 1,688,728.32 × 687,168
  4. Step 4: Simplify right side
    1,223,723.52x = 1,160,440,062,197.76
  5. Step 5: Solve for x
    x = 1,160,440,062,197.76/1,223,723.52
  6. Step 6: Final answer
    x = 948,286.15

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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.