Home / 617,890.42-928,388.40-393,351.13

Finding the Fourth Proportional to 617,890.42, 928,388.40 and 393,351.13

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Solution

The fourth proportional to 617,890.42, 928,388.40 and 393,351.13 is: 591,015.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,890.42 : 928,388.40 = 393,351.13 : x
  2. Step 2: Convert to fraction form
    617,890.42/928,388.40 = 393,351.13/x
  3. Step 3: Cross multiply
    617,890.42x = 928,388.40 × 393,351.13
  4. Step 4: Simplify right side
    617,890.42x = 365,182,626,218.89
  5. Step 5: Solve for x
    x = 365,182,626,218.89/617,890.42
  6. Step 6: Final answer
    x = 591,015.19

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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.