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Finding the Fourth Proportional to 890,000.80, 1,334,410.80 and 490,832.80

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Solution

The fourth proportional to 890,000.80, 1,334,410.80 and 490,832.80 is: 735,923.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,000.80 : 1,334,410.80 = 490,832.80 : x
  2. Step 2: Convert to fraction form
    890,000.80/1,334,410.80 = 490,832.80/x
  3. Step 3: Cross multiply
    890,000.80x = 1,334,410.80 × 490,832.80
  4. Step 4: Simplify right side
    890,000.80x = 654,972,589,314.24
  5. Step 5: Solve for x
    x = 654,972,589,314.24/890,000.80
  6. Step 6: Final answer
    x = 735,923.60

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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.