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Finding the Fourth Proportional to 520,903.46, 779,223.62 and 393,597.38

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Solution

The fourth proportional to 520,903.46, 779,223.62 and 393,597.38 is: 588,785.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,903.46 : 779,223.62 = 393,597.38 : x
  2. Step 2: Convert to fraction form
    520,903.46/779,223.62 = 393,597.38/x
  3. Step 3: Cross multiply
    520,903.46x = 779,223.62 × 393,597.38
  4. Step 4: Simplify right side
    520,903.46x = 306,700,375,266.12
  5. Step 5: Solve for x
    x = 306,700,375,266.12/520,903.46
  6. Step 6: Final answer
    x = 588,785.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.