Finding the Fourth Proportional to 808,640,813.42, 1,209,769,748.96 and 612,469,332.75
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Solution
The fourth proportional to 808,640,813.42, 1,209,769,748.96 and 612,469,332.75 is: 916,286,759.99
Step by Step Solution
- Step 1: Write the proportion equation
808,640,813.42 : 1,209,769,748.96 = 612,469,332.75 : x - Step 2: Convert to fraction form
808,640,813.42/1,209,769,748.96 = 612,469,332.75/x - Step 3: Cross multiply
808,640,813.42x = 1,209,769,748.96 × 612,469,332.75 - Step 4: Simplify right side
808,640,813.42x = 740,946,870,923,603,840 - Step 5: Solve for x
x = 740,946,870,923,603,840/808,640,813.42 - Step 6: Final answer
x = 916,286,759.99
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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.