Home / 919,129.30-1,379,817.15-520,047.70

Finding the Fourth Proportional to 919,129.30, 1,379,817.15 and 520,047.70

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Solution

The fourth proportional to 919,129.30, 1,379,817.15 and 520,047.70 is: 780,707.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,129.30 : 1,379,817.15 = 520,047.70 : x
  2. Step 2: Convert to fraction form
    919,129.30/1,379,817.15 = 520,047.70/x
  3. Step 3: Cross multiply
    919,129.30x = 1,379,817.15 × 520,047.70
  4. Step 4: Simplify right side
    919,129.30x = 717,570,735,278.06
  5. Step 5: Solve for x
    x = 717,570,735,278.06/919,129.30
  6. Step 6: Final answer
    x = 780,707.06

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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.