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Finding the Fourth Proportional to 679,819,008.60, 1,019,728,512.90 and 668,481,600.60

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Solution

The fourth proportional to 679,819,008.60, 1,019,728,512.90 and 668,481,600.60 is: 1,002,722,400.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,819,008.60 : 1,019,728,512.90 = 668,481,600.60 : x
  2. Step 2: Convert to fraction form
    679,819,008.60/1,019,728,512.90 = 668,481,600.60/x
  3. Step 3: Cross multiply
    679,819,008.60x = 1,019,728,512.90 × 668,481,600.60
  4. Step 4: Simplify right side
    679,819,008.60x = 681,669,748,480,849,792
  5. Step 5: Solve for x
    x = 681,669,748,480,849,792/679,819,008.60
  6. Step 6: Final answer
    x = 1,002,722,400.90

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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.