Finding the Fourth Proportional to 1,178,226,991.24, 1,625,878,326.48 and 649,562,081.56
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Solution
The fourth proportional to 1,178,226,991.24, 1,625,878,326.48 and 649,562,081.56 is: 896,354,368.02
Step by Step Solution
- Step 1: Write the proportion equation
1,178,226,991.24 : 1,625,878,326.48 = 649,562,081.56 : x - Step 2: Convert to fraction form
1,178,226,991.24/1,625,878,326.48 = 649,562,081.56/x - Step 3: Cross multiply
1,178,226,991.24x = 1,625,878,326.48 × 649,562,081.56 - Step 4: Simplify right side
1,178,226,991.24x = 1,056,108,910,111,638,016 - Step 5: Solve for x
x = 1,056,108,910,111,638,016/1,178,226,991.24 - Step 6: Final answer
x = 896,354,368.02
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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.