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Finding the Fourth Proportional to 398,718.43, 595,536.02 and 360,709.36

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Solution

The fourth proportional to 398,718.43, 595,536.02 and 360,709.36 is: 538,764.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,718.43 : 595,536.02 = 360,709.36 : x
  2. Step 2: Convert to fraction form
    398,718.43/595,536.02 = 360,709.36/x
  3. Step 3: Cross multiply
    398,718.43x = 595,536.02 × 360,709.36
  4. Step 4: Simplify right side
    398,718.43x = 214,815,416,631.15
  5. Step 5: Solve for x
    x = 214,815,416,631.15/398,718.43
  6. Step 6: Final answer
    x = 538,764.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.