Finding the Fourth Proportional to 4,247,290,832.97, 6,371,191,621.79 and 1,299,595,988.81
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Solution
The fourth proportional to 4,247,290,832.97, 6,371,191,621.79 and 1,299,595,988.81 is: 1,949,472,122.63
Step by Step Solution
- Step 1: Write the proportion equation
4,247,290,832.97 : 6,371,191,621.79 = 1,299,595,988.81 : x - Step 2: Convert to fraction form
4,247,290,832.97/6,371,191,621.79 = 1,299,595,988.81/x - Step 3: Cross multiply
4,247,290,832.97x = 6,371,191,621.79 × 1,299,595,988.81 - Step 4: Simplify right side
4,247,290,832.97x = 8,279,975,075,579,808,768 - Step 5: Solve for x
x = 8,279,975,075,579,808,768/4,247,290,832.97 - Step 6: Final answer
x = 1,949,472,122.63
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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.