Home / 626,077.45-863,986.80-354,139.48

Finding the Fourth Proportional to 626,077.45, 863,986.80 and 354,139.48

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Solution

The fourth proportional to 626,077.45, 863,986.80 and 354,139.48 is: 488,712.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,077.45 : 863,986.80 = 354,139.48 : x
  2. Step 2: Convert to fraction form
    626,077.45/863,986.80 = 354,139.48/x
  3. Step 3: Cross multiply
    626,077.45x = 863,986.80 × 354,139.48
  4. Step 4: Simplify right side
    626,077.45x = 305,971,836,078.86
  5. Step 5: Solve for x
    x = 305,971,836,078.86/626,077.45
  6. Step 6: Final answer
    x = 488,712.44

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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.