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Finding the Fourth Proportional to 499,467.60, 689,187.96 and 284,616.72

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Solution

The fourth proportional to 499,467.60, 689,187.96 and 284,616.72 is: 392,727.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,467.60 : 689,187.96 = 284,616.72 : x
  2. Step 2: Convert to fraction form
    499,467.60/689,187.96 = 284,616.72/x
  3. Step 3: Cross multiply
    499,467.60x = 689,187.96 × 284,616.72
  4. Step 4: Simplify right side
    499,467.60x = 196,154,416,638.69
  5. Step 5: Solve for x
    x = 196,154,416,638.69/499,467.60
  6. Step 6: Final answer
    x = 392,727.01

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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.