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Finding the Fourth Proportional to 609,068.79, 840,321.71 and 354,370.77

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Solution

The fourth proportional to 609,068.79, 840,321.71 and 354,370.77 is: 488,919.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,068.79 : 840,321.71 = 354,370.77 : x
  2. Step 2: Convert to fraction form
    609,068.79/840,321.71 = 354,370.77/x
  3. Step 3: Cross multiply
    609,068.79x = 840,321.71 × 354,370.77
  4. Step 4: Simplify right side
    609,068.79x = 297,785,449,648.56
  5. Step 5: Solve for x
    x = 297,785,449,648.56/609,068.79
  6. Step 6: Final answer
    x = 488,919.24

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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.