Home / 660,109,510.80-990,164,266.20-332,458,419.60

Finding the Fourth Proportional to 660,109,510.80, 990,164,266.20 and 332,458,419.60

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Solution

The fourth proportional to 660,109,510.80, 990,164,266.20 and 332,458,419.60 is: 498,687,629.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,109,510.80 : 990,164,266.20 = 332,458,419.60 : x
  2. Step 2: Convert to fraction form
    660,109,510.80/990,164,266.20 = 332,458,419.60/x
  3. Step 3: Cross multiply
    660,109,510.80x = 990,164,266.20 × 332,458,419.60
  4. Step 4: Simplify right side
    660,109,510.80x = 329,188,447,085,245,760
  5. Step 5: Solve for x
    x = 329,188,447,085,245,760/660,109,510.80
  6. Step 6: Final answer
    x = 498,687,629.40

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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.