Home / 919,875.39-1,380,042.71-320,845.16

Finding the Fourth Proportional to 919,875.39, 1,380,042.71 and 320,845.16

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Solution

The fourth proportional to 919,875.39, 1,380,042.71 and 320,845.16 is: 481,347.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,875.39 : 1,380,042.71 = 320,845.16 : x
  2. Step 2: Convert to fraction form
    919,875.39/1,380,042.71 = 320,845.16/x
  3. Step 3: Cross multiply
    919,875.39x = 1,380,042.71 × 320,845.16
  4. Step 4: Simplify right side
    919,875.39x = 442,780,015,592.34
  5. Step 5: Solve for x
    x = 442,780,015,592.34/919,875.39
  6. Step 6: Final answer
    x = 481,347.82

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1.5x scale

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.