Finding the Fourth Proportional to 729,658,076.38, 1,006,929,116.68 and 395,131,176.09
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Solution
The fourth proportional to 729,658,076.38, 1,006,929,116.68 and 395,131,176.09 is: 545,281,548.98
Step by Step Solution
- Step 1: Write the proportion equation
729,658,076.38 : 1,006,929,116.68 = 395,131,176.09 : x - Step 2: Convert to fraction form
729,658,076.38/1,006,929,116.68 = 395,131,176.09/x - Step 3: Cross multiply
729,658,076.38x = 1,006,929,116.68 × 395,131,176.09 - Step 4: Simplify right side
729,658,076.38x = 397,869,086,113,033,216 - Step 5: Solve for x
x = 397,869,086,113,033,216/729,658,076.38 - Step 6: Final answer
x = 545,281,548.98
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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.