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Finding the Fourth Proportional to 529,322.70, 730,452.69 and 287,599.80

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Solution

The fourth proportional to 529,322.70, 730,452.69 and 287,599.80 is: 396,880.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,322.70 : 730,452.69 = 287,599.80 : x
  2. Step 2: Convert to fraction form
    529,322.70/730,452.69 = 287,599.80/x
  3. Step 3: Cross multiply
    529,322.70x = 730,452.69 × 287,599.80
  4. Step 4: Simplify right side
    529,322.70x = 210,078,047,553.46
  5. Step 5: Solve for x
    x = 210,078,047,553.46/529,322.70
  6. Step 6: Final answer
    x = 396,880.86

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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.