Home / 688,968.28-950,776.62-398,620.60

Finding the Fourth Proportional to 688,968.28, 950,776.62 and 398,620.60

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Solution

The fourth proportional to 688,968.28, 950,776.62 and 398,620.60 is: 550,096.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,968.28 : 950,776.62 = 398,620.60 : x
  2. Step 2: Convert to fraction form
    688,968.28/950,776.62 = 398,620.60/x
  3. Step 3: Cross multiply
    688,968.28x = 950,776.62 × 398,620.60
  4. Step 4: Simplify right side
    688,968.28x = 378,999,146,730.37
  5. Step 5: Solve for x
    x = 378,999,146,730.37/688,968.28
  6. Step 6: Final answer
    x = 550,096.66

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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.