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Finding the Fourth Proportional to 561,826.07, 775,130.06 and 319,937.12

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Solution

The fourth proportional to 561,826.07, 775,130.06 and 319,937.12 is: 441,405.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,826.07 : 775,130.06 = 319,937.12 : x
  2. Step 2: Convert to fraction form
    561,826.07/775,130.06 = 319,937.12/x
  3. Step 3: Cross multiply
    561,826.07x = 775,130.06 × 319,937.12
  4. Step 4: Simplify right side
    561,826.07x = 247,992,873,546.49
  5. Step 5: Solve for x
    x = 247,992,873,546.49/561,826.07
  6. Step 6: Final answer
    x = 441,405.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.