Finding the Fourth Proportional to 660,574,976.39, 990,207,965.21 and 310,193,827.59
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Solution
The fourth proportional to 660,574,976.39, 990,207,965.21 and 310,193,827.59 is: 464,983,400.55
Step by Step Solution
- Step 1: Write the proportion equation
660,574,976.39 : 990,207,965.21 = 310,193,827.59 : x - Step 2: Convert to fraction form
660,574,976.39/990,207,965.21 = 310,193,827.59/x - Step 3: Cross multiply
660,574,976.39x = 990,207,965.21 × 310,193,827.59 - Step 4: Simplify right side
660,574,976.39x = 307,156,398,840,757,760 - Step 5: Solve for x
x = 307,156,398,840,757,760/660,574,976.39 - Step 6: Final answer
x = 464,983,400.55
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1.5x scale
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.