Finding the Fourth Proportional to 812,503,218.62, 1,218,370,626.47 and 314,746,859.07
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Solution
The fourth proportional to 812,503,218.62, 1,218,370,626.47 and 314,746,859.07 is: 471,971,456.95
Step by Step Solution
- Step 1: Write the proportion equation
812,503,218.62 : 1,218,370,626.47 = 314,746,859.07 : x - Step 2: Convert to fraction form
812,503,218.62/1,218,370,626.47 = 314,746,859.07/x - Step 3: Cross multiply
812,503,218.62x = 1,218,370,626.47 × 314,746,859.07 - Step 4: Simplify right side
812,503,218.62x = 383,478,327,863,006,912 - Step 5: Solve for x
x = 383,478,327,863,006,912/812,503,218.62 - Step 6: Final answer
x = 471,971,456.95
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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.