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Finding the Fourth Proportional to 663,362, 915,439.56 and 361,556.72

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Solution

The fourth proportional to 663,362, 915,439.56 and 361,556.72 is: 498,948.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,362 : 915,439.56 = 361,556.72 : x
  2. Step 2: Convert to fraction form
    663,362/915,439.56 = 361,556.72/x
  3. Step 3: Cross multiply
    663,362x = 915,439.56 × 361,556.72
  4. Step 4: Simplify right side
    663,362x = 330,983,324,671.84
  5. Step 5: Solve for x
    x = 330,983,324,671.84/663,362
  6. Step 6: Final answer
    x = 498,948.27

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1.5x scale

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.