Finding the Fourth Proportional to 720,545,807.28, 994,345,862.56 and 403,005,295.18
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Solution
The fourth proportional to 720,545,807.28, 994,345,862.56 and 403,005,295.18 is: 556,143,195.62
Step by Step Solution
- Step 1: Write the proportion equation
720,545,807.28 : 994,345,862.56 = 403,005,295.18 : x - Step 2: Convert to fraction form
720,545,807.28/994,345,862.56 = 403,005,295.18/x - Step 3: Cross multiply
720,545,807.28x = 994,345,862.56 × 403,005,295.18 - Step 4: Simplify right side
720,545,807.28x = 400,726,647,852,004,480 - Step 5: Solve for x
x = 400,726,647,852,004,480/720,545,807.28 - Step 6: Final answer
x = 556,143,195.62
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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.