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Finding the Fourth Proportional to 684,999.15, 945,297.49 and 383,193.15

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Solution

The fourth proportional to 684,999.15, 945,297.49 and 383,193.15 is: 528,805.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,999.15 : 945,297.49 = 383,193.15 : x
  2. Step 2: Convert to fraction form
    684,999.15/945,297.49 = 383,193.15/x
  3. Step 3: Cross multiply
    684,999.15x = 945,297.49 × 383,193.15
  4. Step 4: Simplify right side
    684,999.15x = 362,231,522,880.19
  5. Step 5: Solve for x
    x = 362,231,522,880.19/684,999.15
  6. Step 6: Final answer
    x = 528,805.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.