Finding the Fourth Proportional to 702,042,203.12, 968,848,694.35 and 388,776,417.12
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Solution
The fourth proportional to 702,042,203.12, 968,848,694.35 and 388,776,417.12 is: 536,528,320.45
Step by Step Solution
- Step 1: Write the proportion equation
702,042,203.12 : 968,848,694.35 = 388,776,417.12 : x - Step 2: Convert to fraction form
702,042,203.12/968,848,694.35 = 388,776,417.12/x - Step 3: Cross multiply
702,042,203.12x = 968,848,694.35 × 388,776,417.12 - Step 4: Simplify right side
702,042,203.12x = 376,665,524,119,811,008 - Step 5: Solve for x
x = 376,665,524,119,811,008/702,042,203.12 - Step 6: Final answer
x = 536,528,320.45
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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.