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Finding the Fourth Proportional to 520,089.15, 729,107.85 and 520,089.15

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Solution

The fourth proportional to 520,089.15, 729,107.85 and 520,089.15 is: 729,107.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,089.15 : 729,107.85 = 520,089.15 : x
  2. Step 2: Convert to fraction form
    520,089.15/729,107.85 = 520,089.15/x
  3. Step 3: Cross multiply
    520,089.15x = 729,107.85 × 520,089.15
  4. Step 4: Simplify right side
    520,089.15x = 379,201,081,964.83
  5. Step 5: Solve for x
    x = 379,201,081,964.83/520,089.15
  6. Step 6: Final answer
    x = 729,107.85

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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.