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Finding the Fourth Proportional to 553,183.56, 761,787.18 and 480,553.56

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Solution

The fourth proportional to 553,183.56, 761,787.18 and 480,553.56 is: 661,768.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,183.56 : 761,787.18 = 480,553.56 : x
  2. Step 2: Convert to fraction form
    553,183.56/761,787.18 = 480,553.56/x
  3. Step 3: Cross multiply
    553,183.56x = 761,787.18 × 480,553.56
  4. Step 4: Simplify right side
    553,183.56x = 366,079,541,311.36
  5. Step 5: Solve for x
    x = 366,079,541,311.36/553,183.56
  6. Step 6: Final answer
    x = 661,768.66

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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.