Finding the Fourth Proportional to 528,400,175.09, 729,172,240.68 and 293,465,962.31
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Solution
The fourth proportional to 528,400,175.09, 729,172,240.68 and 293,465,962.31 is: 404,971,919.75
Step by Step Solution
- Step 1: Write the proportion equation
528,400,175.09 : 729,172,240.68 = 293,465,962.31 : x - Step 2: Convert to fraction form
528,400,175.09/729,172,240.68 = 293,465,962.31/x - Step 3: Cross multiply
528,400,175.09x = 729,172,240.68 × 293,465,962.31 - Step 4: Simplify right side
528,400,175.09x = 213,987,233,302,718,048 - Step 5: Solve for x
x = 213,987,233,302,718,048/528,400,175.09 - Step 6: Final answer
x = 404,971,919.75
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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.