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Finding the Fourth Proportional to 370,814.30, 520,321 and 370,814.30

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Solution

The fourth proportional to 370,814.30, 520,321 and 370,814.30 is: 520,321

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,814.30 : 520,321 = 370,814.30 : x
  2. Step 2: Convert to fraction form
    370,814.30/520,321 = 370,814.30/x
  3. Step 3: Cross multiply
    370,814.30x = 520,321 × 370,814.30
  4. Step 4: Simplify right side
    370,814.30x = 192,942,467,390.30
  5. Step 5: Solve for x
    x = 192,942,467,390.30/370,814.30
  6. Step 6: Final answer
    x = 520,321

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.