Finding the Fourth Proportional to 664,302,918.90, 996,454,378.35 and 660,476,543.70
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Solution
The fourth proportional to 664,302,918.90, 996,454,378.35 and 660,476,543.70 is: 990,714,815.55
Step by Step Solution
- Step 1: Write the proportion equation
664,302,918.90 : 996,454,378.35 = 660,476,543.70 : x - Step 2: Convert to fraction form
664,302,918.90/996,454,378.35 = 660,476,543.70/x - Step 3: Cross multiply
664,302,918.90x = 996,454,378.35 × 660,476,543.70 - Step 4: Simplify right side
664,302,918.90x = 658,134,743,767,340,160 - Step 5: Solve for x
x = 658,134,743,767,340,160/664,302,918.90 - Step 6: Final answer
x = 990,714,815.55
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Double scale
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Similar ratio
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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.