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Finding the Fourth Proportional to 1,438,641,010.65, 2,157,961,515.98 and 1,438,641,010.65

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Solution

The fourth proportional to 1,438,641,010.65, 2,157,961,515.98 and 1,438,641,010.65 is: 2,157,961,515.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,641,010.65 : 2,157,961,515.98 = 1,438,641,010.65 : x
  2. Step 2: Convert to fraction form
    1,438,641,010.65/2,157,961,515.98 = 1,438,641,010.65/x
  3. Step 3: Cross multiply
    1,438,641,010.65x = 2,157,961,515.98 × 1,438,641,010.65
  4. Step 4: Simplify right side
    1,438,641,010.65x = 3,104,531,936,286,080,000
  5. Step 5: Solve for x
    x = 3,104,531,936,286,080,000/1,438,641,010.65
  6. Step 6: Final answer
    x = 2,157,961,515.98

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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.