Home / 890,086.20-1,228,298.22-487,669.56

Finding the Fourth Proportional to 890,086.20, 1,228,298.22 and 487,669.56

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Solution

The fourth proportional to 890,086.20, 1,228,298.22 and 487,669.56 is: 672,972.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,086.20 : 1,228,298.22 = 487,669.56 : x
  2. Step 2: Convert to fraction form
    890,086.20/1,228,298.22 = 487,669.56/x
  3. Step 3: Cross multiply
    890,086.20x = 1,228,298.22 × 487,669.56
  4. Step 4: Simplify right side
    890,086.20x = 599,003,652,496.18
  5. Step 5: Solve for x
    x = 599,003,652,496.18/890,086.20
  6. Step 6: Final answer
    x = 672,972.63

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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.