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Finding the Fourth Proportional to 590,661.20, 886,121.40 and 291,285.20

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Solution

The fourth proportional to 590,661.20, 886,121.40 and 291,285.20 is: 436,991.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,661.20 : 886,121.40 = 291,285.20 : x
  2. Step 2: Convert to fraction form
    590,661.20/886,121.40 = 291,285.20/x
  3. Step 3: Cross multiply
    590,661.20x = 886,121.40 × 291,285.20
  4. Step 4: Simplify right side
    590,661.20x = 258,114,049,223.28
  5. Step 5: Solve for x
    x = 258,114,049,223.28/590,661.20
  6. Step 6: Final answer
    x = 436,991.71

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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.