Home / 688,469.12-949,984.32-386,604.80

Finding the Fourth Proportional to 688,469.12, 949,984.32 and 386,604.80

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Solution

The fourth proportional to 688,469.12, 949,984.32 and 386,604.80 is: 533,456.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,469.12 : 949,984.32 = 386,604.80 : x
  2. Step 2: Convert to fraction form
    688,469.12/949,984.32 = 386,604.80/x
  3. Step 3: Cross multiply
    688,469.12x = 949,984.32 × 386,604.80
  4. Step 4: Simplify right side
    688,469.12x = 367,268,498,036.74
  5. Step 5: Solve for x
    x = 367,268,498,036.74/688,469.12
  6. Step 6: Final answer
    x = 533,456.75

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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.