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Finding the Fourth Proportional to 631,922.94, 872,059.44 and 359,986.80

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Solution

The fourth proportional to 631,922.94, 872,059.44 and 359,986.80 is: 496,785.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,922.94 : 872,059.44 = 359,986.80 : x
  2. Step 2: Convert to fraction form
    631,922.94/872,059.44 = 359,986.80/x
  3. Step 3: Cross multiply
    631,922.94x = 872,059.44 × 359,986.80
  4. Step 4: Simplify right side
    631,922.94x = 313,929,887,215.39
  5. Step 5: Solve for x
    x = 313,929,887,215.39/631,922.94
  6. Step 6: Final answer
    x = 496,785.08

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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.