Finding the Fourth Proportional to 772,418,813.89, 1,158,519,133.35 and 247,719,734.53
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Solution
The fourth proportional to 772,418,813.89, 1,158,519,133.35 and 247,719,734.53 is: 371,544,616.73
Step by Step Solution
- Step 1: Write the proportion equation
772,418,813.89 : 1,158,519,133.35 = 247,719,734.53 : x - Step 2: Convert to fraction form
772,418,813.89/1,158,519,133.35 = 247,719,734.53/x - Step 3: Cross multiply
772,418,813.89x = 1,158,519,133.35 × 247,719,734.53 - Step 4: Simplify right side
772,418,813.89x = 286,988,052,158,491,360 - Step 5: Solve for x
x = 286,988,052,158,491,360/772,418,813.89 - Step 6: Final answer
x = 371,544,616.73
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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.