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Finding the Fourth Proportional to 520,078.90, 729,093.50 and 520,078.90

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Solution

The fourth proportional to 520,078.90, 729,093.50 and 520,078.90 is: 729,093.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,078.90 : 729,093.50 = 520,078.90 : x
  2. Step 2: Convert to fraction form
    520,078.90/729,093.50 = 520,078.90/x
  3. Step 3: Cross multiply
    520,078.90x = 729,093.50 × 520,078.90
  4. Step 4: Simplify right side
    520,078.90x = 379,186,145,477.15
  5. Step 5: Solve for x
    x = 379,186,145,477.15/520,078.90
  6. Step 6: Final answer
    x = 729,093.50

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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.