Home / 1,217,764,497.61-1,680,515,006.22-660,847,544.67

Finding the Fourth Proportional to 1,217,764,497.61, 1,680,515,006.22 and 660,847,544.67

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Solution

The fourth proportional to 1,217,764,497.61, 1,680,515,006.22 and 660,847,544.67 is: 911,969,611.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,764,497.61 : 1,680,515,006.22 = 660,847,544.67 : x
  2. Step 2: Convert to fraction form
    1,217,764,497.61/1,680,515,006.22 = 660,847,544.67/x
  3. Step 3: Cross multiply
    1,217,764,497.61x = 1,680,515,006.22 × 660,847,544.67
  4. Step 4: Simplify right side
    1,217,764,497.61x = 1,110,564,215,641,576,704
  5. Step 5: Solve for x
    x = 1,110,564,215,641,576,704/1,217,764,497.61
  6. Step 6: Final answer
    x = 911,969,611.38

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Double scale
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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.