Home / 919,881.39-1,380,051.72-320,851.17

Finding the Fourth Proportional to 919,881.39, 1,380,051.72 and 320,851.17

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Solution

The fourth proportional to 919,881.39, 1,380,051.72 and 320,851.17 is: 481,356.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,881.39 : 1,380,051.72 = 320,851.17 : x
  2. Step 2: Convert to fraction form
    919,881.39/1,380,051.72 = 320,851.17/x
  3. Step 3: Cross multiply
    919,881.39x = 1,380,051.72 × 320,851.17
  4. Step 4: Simplify right side
    919,881.39x = 442,791,209,022.51
  5. Step 5: Solve for x
    x = 442,791,209,022.51/919,881.39
  6. Step 6: Final answer
    x = 481,356.85

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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.