Finding the Fourth Proportional to 729,712,474.92, 1,006,990,769.34 and 395,182,279.17
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Solution
The fourth proportional to 729,712,474.92, 1,006,990,769.34 and 395,182,279.17 is: 545,344,804.99
Step by Step Solution
- Step 1: Write the proportion equation
729,712,474.92 : 1,006,990,769.34 = 395,182,279.17 : x - Step 2: Convert to fraction form
729,712,474.92/1,006,990,769.34 = 395,182,279.17/x - Step 3: Cross multiply
729,712,474.92x = 1,006,990,769.34 × 395,182,279.17 - Step 4: Simplify right side
729,712,474.92x = 397,944,907,330,932,992 - Step 5: Solve for x
x = 397,944,907,330,932,992/729,712,474.92 - Step 6: Final answer
x = 545,344,804.99
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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.