Finding the Fourth Proportional to 1,259,656,189.29, 1,738,367,291.49 and 687,470,572.80
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Solution
The fourth proportional to 1,259,656,189.29, 1,738,367,291.49 and 687,470,572.80 is: 948,732,176.11
Step by Step Solution
- Step 1: Write the proportion equation
1,259,656,189.29 : 1,738,367,291.49 = 687,470,572.80 : x - Step 2: Convert to fraction form
1,259,656,189.29/1,738,367,291.49 = 687,470,572.80/x - Step 3: Cross multiply
1,259,656,189.29x = 1,738,367,291.49 × 687,470,572.80 - Step 4: Simplify right side
1,259,656,189.29x = 1,195,076,357,617,414,912 - Step 5: Solve for x
x = 1,195,076,357,617,414,912/1,259,656,189.29 - Step 6: Final answer
x = 948,732,176.11
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.