Home / 919,874.39-1,380,041.21-320,844.16

Finding the Fourth Proportional to 919,874.39, 1,380,041.21 and 320,844.16

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Solution

The fourth proportional to 919,874.39, 1,380,041.21 and 320,844.16 is: 481,346.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,874.39 : 1,380,041.21 = 320,844.16 : x
  2. Step 2: Convert to fraction form
    919,874.39/1,380,041.21 = 320,844.16/x
  3. Step 3: Cross multiply
    919,874.39x = 1,380,041.21 × 320,844.16
  4. Step 4: Simplify right side
    919,874.39x = 442,778,154,283.41
  5. Step 5: Solve for x
    x = 442,778,154,283.41/919,874.39
  6. Step 6: Final answer
    x = 481,346.32

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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.