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Finding the Fourth Proportional to 499,875.30, 689,846.22 and 285,013.08

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Solution

The fourth proportional to 499,875.30, 689,846.22 and 285,013.08 is: 393,328.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,875.30 : 689,846.22 = 285,013.08 : x
  2. Step 2: Convert to fraction form
    499,875.30/689,846.22 = 285,013.08/x
  3. Step 3: Cross multiply
    499,875.30x = 689,846.22 × 285,013.08
  4. Step 4: Simplify right side
    499,875.30x = 196,615,195,888.56
  5. Step 5: Solve for x
    x = 196,615,195,888.56/499,875.30
  6. Step 6: Final answer
    x = 393,328.49

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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.