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Finding the Fourth Proportional to 561,582.66, 774,983.88 and 319,887.54

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Solution

The fourth proportional to 561,582.66, 774,983.88 and 319,887.54 is: 441,444.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,582.66 : 774,983.88 = 319,887.54 : x
  2. Step 2: Convert to fraction form
    561,582.66/774,983.88 = 319,887.54/x
  3. Step 3: Cross multiply
    561,582.66x = 774,983.88 × 319,887.54
  4. Step 4: Simplify right side
    561,582.66x = 247,907,686,912.86
  5. Step 5: Solve for x
    x = 247,907,686,912.86/561,582.66
  6. Step 6: Final answer
    x = 441,444.70

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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.