Home / 640,644.04-884,107.23-354,182.58

Finding the Fourth Proportional to 640,644.04, 884,107.23 and 354,182.58

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Solution

The fourth proportional to 640,644.04, 884,107.23 and 354,182.58 is: 488,782.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,644.04 : 884,107.23 = 354,182.58 : x
  2. Step 2: Convert to fraction form
    640,644.04/884,107.23 = 354,182.58/x
  3. Step 3: Cross multiply
    640,644.04x = 884,107.23 × 354,182.58
  4. Step 4: Simplify right side
    640,644.04x = 313,135,380,603.51
  5. Step 5: Solve for x
    x = 313,135,380,603.51/640,644.04
  6. Step 6: Final answer
    x = 488,782.16

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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.