Home / 687,872.20-949,263.62-386,066.20

Finding the Fourth Proportional to 687,872.20, 949,263.62 and 386,066.20

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Solution

The fourth proportional to 687,872.20, 949,263.62 and 386,066.20 is: 532,771.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,872.20 : 949,263.62 = 386,066.20 : x
  2. Step 2: Convert to fraction form
    687,872.20/949,263.62 = 386,066.20/x
  3. Step 3: Cross multiply
    687,872.20x = 949,263.62 × 386,066.20
  4. Step 4: Simplify right side
    687,872.20x = 366,478,598,571.64
  5. Step 5: Solve for x
    x = 366,478,598,571.64/687,872.20
  6. Step 6: Final answer
    x = 532,771.35

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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.