Home / 890,644.20-1,336,128.30-291,438.60

Finding the Fourth Proportional to 890,644.20, 1,336,128.30 and 291,438.60

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Solution

The fourth proportional to 890,644.20, 1,336,128.30 and 291,438.60 is: 437,210.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,644.20 : 1,336,128.30 = 291,438.60 : x
  2. Step 2: Convert to fraction form
    890,644.20/1,336,128.30 = 291,438.60/x
  3. Step 3: Cross multiply
    890,644.20x = 1,336,128.30 × 291,438.60
  4. Step 4: Simplify right side
    890,644.20x = 389,399,361,172.38
  5. Step 5: Solve for x
    x = 389,399,361,172.38/890,644.20
  6. Step 6: Final answer
    x = 437,210.91

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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.