Finding the Fourth Proportional to 729,657,963.11, 1,006,928,960.09 and 395,131,062.31
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Solution
The fourth proportional to 729,657,963.11, 1,006,928,960.09 and 395,131,062.31 is: 545,281,391.82
Step by Step Solution
- Step 1: Write the proportion equation
729,657,963.11 : 1,006,928,960.09 = 395,131,062.31 : x - Step 2: Convert to fraction form
729,657,963.11/1,006,928,960.09 = 395,131,062.31/x - Step 3: Cross multiply
729,657,963.11x = 1,006,928,960.09 × 395,131,062.31 - Step 4: Simplify right side
729,657,963.11x = 397,868,909,672,528,000 - Step 5: Solve for x
x = 397,868,909,672,528,000/729,657,963.11 - Step 6: Final answer
x = 545,281,391.82
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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.