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Finding the Fourth Proportional to 871,279,704.60, 1,306,919,556.90 and 674,008,805.40

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Solution

The fourth proportional to 871,279,704.60, 1,306,919,556.90 and 674,008,805.40 is: 1,011,013,208.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,279,704.60 : 1,306,919,556.90 = 674,008,805.40 : x
  2. Step 2: Convert to fraction form
    871,279,704.60/1,306,919,556.90 = 674,008,805.40/x
  3. Step 3: Cross multiply
    871,279,704.60x = 1,306,919,556.90 × 674,008,805.40
  4. Step 4: Simplify right side
    871,279,704.60x = 880,875,289,300,066,304
  5. Step 5: Solve for x
    x = 880,875,289,300,066,304/871,279,704.60
  6. Step 6: Final answer
    x = 1,011,013,208.10

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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.