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Finding the Fourth Proportional to 679,819,010.10, 1,019,728,515.15 and 668,481,602.10

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Solution

The fourth proportional to 679,819,010.10, 1,019,728,515.15 and 668,481,602.10 is: 1,002,722,403.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,819,010.10 : 1,019,728,515.15 = 668,481,602.10 : x
  2. Step 2: Convert to fraction form
    679,819,010.10/1,019,728,515.15 = 668,481,602.10/x
  3. Step 3: Cross multiply
    679,819,010.10x = 1,019,728,515.15 × 668,481,602.10
  4. Step 4: Simplify right side
    679,819,010.10x = 681,669,751,514,526,080
  5. Step 5: Solve for x
    x = 681,669,751,514,526,080/679,819,010.10
  6. Step 6: Final answer
    x = 1,002,722,403.15

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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.