Finding the Fourth Proportional to 718,697,315.24, 991,805,283.62 and 388,672,454.12
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Solution
The fourth proportional to 718,697,315.24, 991,805,283.62 and 388,672,454.12 is: 536,369,602.92
Step by Step Solution
- Step 1: Write the proportion equation
718,697,315.24 : 991,805,283.62 = 388,672,454.12 : x - Step 2: Convert to fraction form
718,697,315.24/991,805,283.62 = 388,672,454.12/x - Step 3: Cross multiply
718,697,315.24x = 991,805,283.62 × 388,672,454.12 - Step 4: Simplify right side
718,697,315.24x = 385,487,393,593,768,064 - Step 5: Solve for x
x = 385,487,393,593,768,064/718,697,315.24 - Step 6: Final answer
x = 536,369,602.92
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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.