Home / 919,389.20-1,379,861.40-414,726.80

Finding the Fourth Proportional to 919,389.20, 1,379,861.40 and 414,726.80

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Solution

The fourth proportional to 919,389.20, 1,379,861.40 and 414,726.80 is: 622,440.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,389.20 : 1,379,861.40 = 414,726.80 : x
  2. Step 2: Convert to fraction form
    919,389.20/1,379,861.40 = 414,726.80/x
  3. Step 3: Cross multiply
    919,389.20x = 1,379,861.40 × 414,726.80
  4. Step 4: Simplify right side
    919,389.20x = 572,265,502,865.52
  5. Step 5: Solve for x
    x = 572,265,502,865.52/919,389.20
  6. Step 6: Final answer
    x = 622,440.97

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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.