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Finding the Fourth Proportional to 663,735.72, 915,953.60 and 361,929.72

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Solution

The fourth proportional to 663,735.72, 915,953.60 and 361,929.72 is: 499,462.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,735.72 : 915,953.60 = 361,929.72 : x
  2. Step 2: Convert to fraction form
    663,735.72/915,953.60 = 361,929.72/x
  3. Step 3: Cross multiply
    663,735.72x = 915,953.60 × 361,929.72
  4. Step 4: Simplify right side
    663,735.72x = 331,510,829,980.99
  5. Step 5: Solve for x
    x = 331,510,829,980.99/663,735.72
  6. Step 6: Final answer
    x = 499,462.09

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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.