Home / 627,214.59-865,578.15-355,290.30

Finding the Fourth Proportional to 627,214.59, 865,578.15 and 355,290.30

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Solution

The fourth proportional to 627,214.59, 865,578.15 and 355,290.30 is: 490,313.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,214.59 : 865,578.15 = 355,290.30 : x
  2. Step 2: Convert to fraction form
    627,214.59/865,578.15 = 355,290.30/x
  3. Step 3: Cross multiply
    627,214.59x = 865,578.15 × 355,290.30
  4. Step 4: Simplify right side
    627,214.59x = 307,531,520,586.95
  5. Step 5: Solve for x
    x = 307,531,520,586.95/627,214.59
  6. Step 6: Final answer
    x = 490,313.09

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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.