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Finding the Fourth Proportional to 569,761.70, 786,513.24 and 355,007.86

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Solution

The fourth proportional to 569,761.70, 786,513.24 and 355,007.86 is: 490,061.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,761.70 : 786,513.24 = 355,007.86 : x
  2. Step 2: Convert to fraction form
    569,761.70/786,513.24 = 355,007.86/x
  3. Step 3: Cross multiply
    569,761.70x = 786,513.24 × 355,007.86
  4. Step 4: Simplify right side
    569,761.70x = 279,218,384,651.92
  5. Step 5: Solve for x
    x = 279,218,384,651.92/569,761.70
  6. Step 6: Final answer
    x = 490,061.70

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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.