Home / 640,558.02-883,970.28-354,078.06

Finding the Fourth Proportional to 640,558.02, 883,970.28 and 354,078.06

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Solution

The fourth proportional to 640,558.02, 883,970.28 and 354,078.06 is: 488,627.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,558.02 : 883,970.28 = 354,078.06 : x
  2. Step 2: Convert to fraction form
    640,558.02/883,970.28 = 354,078.06/x
  3. Step 3: Cross multiply
    640,558.02x = 883,970.28 × 354,078.06
  4. Step 4: Simplify right side
    640,558.02x = 312,994,481,840.06
  5. Step 5: Solve for x
    x = 312,994,481,840.06/640,558.02
  6. Step 6: Final answer
    x = 488,627.84

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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.