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Finding the Fourth Proportional to 559,183.49, 771,695.06 and 317,488.55

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Solution

The fourth proportional to 559,183.49, 771,695.06 and 317,488.55 is: 438,146.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,183.49 : 771,695.06 = 317,488.55 : x
  2. Step 2: Convert to fraction form
    559,183.49/771,695.06 = 317,488.55/x
  3. Step 3: Cross multiply
    559,183.49x = 771,695.06 × 317,488.55
  4. Step 4: Simplify right side
    559,183.49x = 245,004,345,983.36
  5. Step 5: Solve for x
    x = 245,004,345,983.36/559,183.49
  6. Step 6: Final answer
    x = 438,146.61

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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.