Finding the Fourth Proportional to 1,187,373,937.59, 1,638,575,398.62 and 651,529,121.03
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Solution
The fourth proportional to 1,187,373,937.59, 1,638,575,398.62 and 651,529,121.03 is: 899,109,838.45
Step by Step Solution
- Step 1: Write the proportion equation
1,187,373,937.59 : 1,638,575,398.62 = 651,529,121.03 : x - Step 2: Convert to fraction form
1,187,373,937.59/1,638,575,398.62 = 651,529,121.03/x - Step 3: Cross multiply
1,187,373,937.59x = 1,638,575,398.62 × 651,529,121.03 - Step 4: Simplify right side
1,187,373,937.59x = 1,067,579,589,204,270,336 - Step 5: Solve for x
x = 1,067,579,589,204,270,336/1,187,373,937.59 - Step 6: Final answer
x = 899,109,838.45
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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.