Home / 516,096,540.80-774,144,811.20-388,694,556.80

Finding the Fourth Proportional to 516,096,540.80, 774,144,811.20 and 388,694,556.80

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Solution

The fourth proportional to 516,096,540.80, 774,144,811.20 and 388,694,556.80 is: 583,041,835.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,096,540.80 : 774,144,811.20 = 388,694,556.80 : x
  2. Step 2: Convert to fraction form
    516,096,540.80/774,144,811.20 = 388,694,556.80/x
  3. Step 3: Cross multiply
    516,096,540.80x = 774,144,811.20 × 388,694,556.80
  4. Step 4: Simplify right side
    516,096,540.80x = 300,905,874,288,403,712
  5. Step 5: Solve for x
    x = 300,905,874,288,403,712/516,096,540.80
  6. Step 6: Final answer
    x = 583,041,835.20

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.