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Finding the Fourth Proportional to 408,010.20, 612,015.30 and 289,037.40

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Solution

The fourth proportional to 408,010.20, 612,015.30 and 289,037.40 is: 433,556.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,010.20 : 612,015.30 = 289,037.40 : x
  2. Step 2: Convert to fraction form
    408,010.20/612,015.30 = 289,037.40/x
  3. Step 3: Cross multiply
    408,010.20x = 612,015.30 × 289,037.40
  4. Step 4: Simplify right side
    408,010.20x = 176,895,311,072.22
  5. Step 5: Solve for x
    x = 176,895,311,072.22/408,010.20
  6. Step 6: Final answer
    x = 433,556.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.