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Finding the Fourth Proportional to 898,679,939.20, 1,348,019,908.80 and 798,350,876.80

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Solution

The fourth proportional to 898,679,939.20, 1,348,019,908.80 and 798,350,876.80 is: 1,197,526,315.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,679,939.20 : 1,348,019,908.80 = 798,350,876.80 : x
  2. Step 2: Convert to fraction form
    898,679,939.20/1,348,019,908.80 = 798,350,876.80/x
  3. Step 3: Cross multiply
    898,679,939.20x = 1,348,019,908.80 × 798,350,876.80
  4. Step 4: Simplify right side
    898,679,939.20x = 1,076,192,876,134,335,872
  5. Step 5: Solve for x
    x = 1,076,192,876,134,335,872/898,679,939.20
  6. Step 6: Final answer
    x = 1,197,526,315.20

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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.