Home / 919,705.04-1,379,765.20-280,066

Finding the Fourth Proportional to 919,705.04, 1,379,765.20 and 280,066

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Solution

The fourth proportional to 919,705.04, 1,379,765.20 and 280,066 is: 420,162.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,705.04 : 1,379,765.20 = 280,066 : x
  2. Step 2: Convert to fraction form
    919,705.04/1,379,765.20 = 280,066/x
  3. Step 3: Cross multiply
    919,705.04x = 1,379,765.20 × 280,066
  4. Step 4: Simplify right side
    919,705.04x = 386,425,320,503.20
  5. Step 5: Solve for x
    x = 386,425,320,503.20/919,705.04
  6. Step 6: Final answer
    x = 420,162.23

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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.