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Finding the Fourth Proportional to 890,411.78, 1,332,425.03 and 770,879.86

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Solution

The fourth proportional to 890,411.78, 1,332,425.03 and 770,879.86 is: 1,153,555.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,411.78 : 1,332,425.03 = 770,879.86 : x
  2. Step 2: Convert to fraction form
    890,411.78/1,332,425.03 = 770,879.86/x
  3. Step 3: Cross multiply
    890,411.78x = 1,332,425.03 × 770,879.86
  4. Step 4: Simplify right side
    890,411.78x = 1,027,139,613,924.77
  5. Step 5: Solve for x
    x = 1,027,139,613,924.77/890,411.78
  6. Step 6: Final answer
    x = 1,153,555.73

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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.