Home / 640,627.02-883,988.37-354,107.88

Finding the Fourth Proportional to 640,627.02, 883,988.37 and 354,107.88

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Solution

The fourth proportional to 640,627.02, 883,988.37 and 354,107.88 is: 488,626.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,627.02 : 883,988.37 = 354,107.88 : x
  2. Step 2: Convert to fraction form
    640,627.02/883,988.37 = 354,107.88/x
  3. Step 3: Cross multiply
    640,627.02x = 883,988.37 × 354,107.88
  4. Step 4: Simplify right side
    640,627.02x = 313,027,247,645.36
  5. Step 5: Solve for x
    x = 313,027,247,645.36/640,627.02
  6. Step 6: Final answer
    x = 488,626.36

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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.