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Finding the Fourth Proportional to 556,978.53, 834,719.43 and 303,879.75

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Solution

The fourth proportional to 556,978.53, 834,719.43 and 303,879.75 is: 455,411.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,978.53 : 834,719.43 = 303,879.75 : x
  2. Step 2: Convert to fraction form
    556,978.53/834,719.43 = 303,879.75/x
  3. Step 3: Cross multiply
    556,978.53x = 834,719.43 × 303,879.75
  4. Step 4: Simplify right side
    556,978.53x = 253,654,331,708.54
  5. Step 5: Solve for x
    x = 253,654,331,708.54/556,978.53
  6. Step 6: Final answer
    x = 455,411.33

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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.