Finding the Fourth Proportional to 386,468,663.45, 579,702,995.18 and 264,024,657.05
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Solution
The fourth proportional to 386,468,663.45, 579,702,995.18 and 264,024,657.05 is: 396,036,985.58
Step by Step Solution
- Step 1: Write the proportion equation
386,468,663.45 : 579,702,995.18 = 264,024,657.05 : x - Step 2: Convert to fraction form
386,468,663.45/579,702,995.18 = 264,024,657.05/x - Step 3: Cross multiply
386,468,663.45x = 579,702,995.18 × 264,024,657.05 - Step 4: Simplify right side
386,468,663.45x = 153,055,884,493,257,312 - Step 5: Solve for x
x = 153,055,884,493,257,312/386,468,663.45 - Step 6: Final answer
x = 396,036,985.58
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.