Finding the Fourth Proportional to 876,706,381.05, 1,209,811,813.16 and 480,231,129.66
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Solution
The fourth proportional to 876,706,381.05, 1,209,811,813.16 and 480,231,129.66 is: 662,695,408.94
Step by Step Solution
- Step 1: Write the proportion equation
876,706,381.05 : 1,209,811,813.16 = 480,231,129.66 : x - Step 2: Convert to fraction form
876,706,381.05/1,209,811,813.16 = 480,231,129.66/x - Step 3: Cross multiply
876,706,381.05x = 1,209,811,813.16 × 480,231,129.66 - Step 4: Simplify right side
876,706,381.05x = 580,989,293,707,438,464 - Step 5: Solve for x
x = 580,989,293,707,438,464/876,706,381.05 - Step 6: Final answer
x = 662,695,408.94
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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.