Home / 660,528,672.20-990,541,065.90-200,313,888.20

Finding the Fourth Proportional to 660,528,672.20, 990,541,065.90 and 200,313,888.20

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Solution

The fourth proportional to 660,528,672.20, 990,541,065.90 and 200,313,888.20 is: 300,394,427.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,528,672.20 : 990,541,065.90 = 200,313,888.20 : x
  2. Step 2: Convert to fraction form
    660,528,672.20/990,541,065.90 = 200,313,888.20/x
  3. Step 3: Cross multiply
    660,528,672.20x = 990,541,065.90 × 200,313,888.20
  4. Step 4: Simplify right side
    660,528,672.20x = 198,419,132,332,201,408
  5. Step 5: Solve for x
    x = 198,419,132,332,201,408/660,528,672.20
  6. Step 6: Final answer
    x = 300,394,427.50

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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.