Finding the Fourth Proportional to 7,057,128,472.80, 10,585,692,709.20 and 2,915,195,416.80
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Solution
The fourth proportional to 7,057,128,472.80, 10,585,692,709.20 and 2,915,195,416.80 is: 4,372,793,125.20
Step by Step Solution
- Step 1: Write the proportion equation
7,057,128,472.80 : 10,585,692,709.20 = 2,915,195,416.80 : x - Step 2: Convert to fraction form
7,057,128,472.80/10,585,692,709.20 = 2,915,195,416.80/x - Step 3: Cross multiply
7,057,128,472.80x = 10,585,692,709.20 × 2,915,195,416.80 - Step 4: Simplify right side
7,057,128,472.80x = 30,859,362,869,513,019,392 - Step 5: Solve for x
x = 30,859,362,869,513,019,392/7,057,128,472.80 - Step 6: Final answer
x = 4,372,793,125.20
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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.