Home / 640,628.02-883,989.75-354,108.88

Finding the Fourth Proportional to 640,628.02, 883,989.75 and 354,108.88

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Solution

The fourth proportional to 640,628.02, 883,989.75 and 354,108.88 is: 488,627.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,628.02 : 883,989.75 = 354,108.88 : x
  2. Step 2: Convert to fraction form
    640,628.02/883,989.75 = 354,108.88/x
  3. Step 3: Cross multiply
    640,628.02x = 883,989.75 × 354,108.88
  4. Step 4: Simplify right side
    640,628.02x = 313,028,620,303.98
  5. Step 5: Solve for x
    x = 313,028,620,303.98/640,628.02
  6. Step 6: Final answer
    x = 488,627.74

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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.