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Finding the Fourth Proportional to 570,081.52, 786,700.36 and 311,957.43

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Solution

The fourth proportional to 570,081.52, 786,700.36 and 311,957.43 is: 430,494.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,081.52 : 786,700.36 = 311,957.43 : x
  2. Step 2: Convert to fraction form
    570,081.52/786,700.36 = 311,957.43/x
  3. Step 3: Cross multiply
    570,081.52x = 786,700.36 × 311,957.43
  4. Step 4: Simplify right side
    570,081.52x = 245,417,022,485.68
  5. Step 5: Solve for x
    x = 245,417,022,485.68/570,081.52
  6. Step 6: Final answer
    x = 430,494.61

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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.