Home / 641,278.08-884,989.80-354,793.50

Finding the Fourth Proportional to 641,278.08, 884,989.80 and 354,793.50

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Solution

The fourth proportional to 641,278.08, 884,989.80 and 354,793.50 is: 489,629.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,278.08 : 884,989.80 = 354,793.50 : x
  2. Step 2: Convert to fraction form
    641,278.08/884,989.80 = 354,793.50/x
  3. Step 3: Cross multiply
    641,278.08x = 884,989.80 × 354,793.50
  4. Step 4: Simplify right side
    641,278.08x = 313,988,628,606.30
  5. Step 5: Solve for x
    x = 313,988,628,606.30/641,278.08
  6. Step 6: Final answer
    x = 489,629.44

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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.