Finding the Fourth Proportional to 315,474,865.80, 473,212,298.70 and 315,474,865.80
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Solution
The fourth proportional to 315,474,865.80, 473,212,298.70 and 315,474,865.80 is: 473,212,298.70
Step by Step Solution
- Step 1: Write the proportion equation
315,474,865.80 : 473,212,298.70 = 315,474,865.80 : x - Step 2: Convert to fraction form
315,474,865.80/473,212,298.70 = 315,474,865.80/x - Step 3: Cross multiply
315,474,865.80x = 473,212,298.70 × 315,474,865.80 - Step 4: Simplify right side
315,474,865.80x = 149,286,586,427,292,032 - Step 5: Solve for x
x = 149,286,586,427,292,032/315,474,865.80 - Step 6: Final answer
x = 473,212,298.70
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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.