Finding the Fourth Proportional to 718,697,511.84, 991,805,554.26 and 388,672,650.84
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Solution
The fourth proportional to 718,697,511.84, 991,805,554.26 and 388,672,650.84 is: 536,369,874.03
Step by Step Solution
- Step 1: Write the proportion equation
718,697,511.84 : 991,805,554.26 = 388,672,650.84 : x - Step 2: Convert to fraction form
718,697,511.84/991,805,554.26 = 388,672,650.84/x - Step 3: Cross multiply
718,697,511.84x = 991,805,554.26 × 388,672,650.84 - Step 4: Simplify right side
718,697,511.84x = 385,487,693,892,069,632 - Step 5: Solve for x
x = 385,487,693,892,069,632/718,697,511.84 - Step 6: Final answer
x = 536,369,874.03
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1.5x scale
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.