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Finding the Fourth Proportional to 627,300.35, 865,717.17 and 355,370.39

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Solution

The fourth proportional to 627,300.35, 865,717.17 and 355,370.39 is: 490,435.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,300.35 : 865,717.17 = 355,370.39 : x
  2. Step 2: Convert to fraction form
    627,300.35/865,717.17 = 355,370.39/x
  3. Step 3: Cross multiply
    627,300.35x = 865,717.17 × 355,370.39
  4. Step 4: Simplify right side
    627,300.35x = 307,650,245,917.81
  5. Step 5: Solve for x
    x = 307,650,245,917.81/627,300.35
  6. Step 6: Final answer
    x = 490,435.32

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1.5x scale

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.