Home / 626,611.60-864,739.68-340,131.36

Finding the Fourth Proportional to 626,611.60, 864,739.68 and 340,131.36

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Solution

The fourth proportional to 626,611.60, 864,739.68 and 340,131.36 is: 469,389.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,611.60 : 864,739.68 = 340,131.36 : x
  2. Step 2: Convert to fraction form
    626,611.60/864,739.68 = 340,131.36/x
  3. Step 3: Cross multiply
    626,611.60x = 864,739.68 × 340,131.36
  4. Step 4: Simplify right side
    626,611.60x = 294,125,083,404.37
  5. Step 5: Solve for x
    x = 294,125,083,404.37/626,611.60
  6. Step 6: Final answer
    x = 469,389.78

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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.