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Finding the Fourth Proportional to 408,622.60, 612,933.90 and 187,006.60

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Solution

The fourth proportional to 408,622.60, 612,933.90 and 187,006.60 is: 280,509.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,622.60 : 612,933.90 = 187,006.60 : x
  2. Step 2: Convert to fraction form
    408,622.60/612,933.90 = 187,006.60/x
  3. Step 3: Cross multiply
    408,622.60x = 612,933.90 × 187,006.60
  4. Step 4: Simplify right side
    408,622.60x = 114,622,684,663.74
  5. Step 5: Solve for x
    x = 114,622,684,663.74/408,622.60
  6. Step 6: Final answer
    x = 280,509.90

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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.