Home / 919,864.88-1,380,026.96-320,834.65

Finding the Fourth Proportional to 919,864.88, 1,380,026.96 and 320,834.65

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Solution

The fourth proportional to 919,864.88, 1,380,026.96 and 320,834.65 is: 481,332.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,864.88 : 1,380,026.96 = 320,834.65 : x
  2. Step 2: Convert to fraction form
    919,864.88/1,380,026.96 = 320,834.65/x
  3. Step 3: Cross multiply
    919,864.88x = 1,380,026.96 × 320,834.65
  4. Step 4: Simplify right side
    919,864.88x = 442,760,464,054.18
  5. Step 5: Solve for x
    x = 442,760,464,054.18/919,864.88
  6. Step 6: Final answer
    x = 481,332.07

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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.