Home / 627,383.20-865,986.96-401,029.60

Finding the Fourth Proportional to 627,383.20, 865,986.96 and 401,029.60

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Solution

The fourth proportional to 627,383.20, 865,986.96 and 401,029.60 is: 553,547.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,383.20 : 865,986.96 = 401,029.60 : x
  2. Step 2: Convert to fraction form
    627,383.20/865,986.96 = 401,029.60/x
  3. Step 3: Cross multiply
    627,383.20x = 865,986.96 × 401,029.60
  4. Step 4: Simplify right side
    627,383.20x = 347,286,404,174.02
  5. Step 5: Solve for x
    x = 347,286,404,174.02/627,383.20
  6. Step 6: Final answer
    x = 553,547.50

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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.