Home / 919,976.80-1,379,965.20-470,548.30

Finding the Fourth Proportional to 919,976.80, 1,379,965.20 and 470,548.30

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Solution

The fourth proportional to 919,976.80, 1,379,965.20 and 470,548.30 is: 705,822.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,976.80 : 1,379,965.20 = 470,548.30 : x
  2. Step 2: Convert to fraction form
    919,976.80/1,379,965.20 = 470,548.30/x
  3. Step 3: Cross multiply
    919,976.80x = 1,379,965.20 × 470,548.30
  4. Step 4: Simplify right side
    919,976.80x = 649,340,278,919.16
  5. Step 5: Solve for x
    x = 649,340,278,919.16/919,976.80
  6. Step 6: Final answer
    x = 705,822.45

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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.