Finding the Fourth Proportional to 808,218,009.80, 1,212,327,014.70 and 349,052,985.80
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Solution
The fourth proportional to 808,218,009.80, 1,212,327,014.70 and 349,052,985.80 is: 523,579,478.70
Step by Step Solution
- Step 1: Write the proportion equation
808,218,009.80 : 1,212,327,014.70 = 349,052,985.80 : x - Step 2: Convert to fraction form
808,218,009.80/1,212,327,014.70 = 349,052,985.80/x - Step 3: Cross multiply
808,218,009.80x = 1,212,327,014.70 × 349,052,985.80 - Step 4: Simplify right side
808,218,009.80x = 423,166,364,247,035,520 - Step 5: Solve for x
x = 423,166,364,247,035,520/808,218,009.80 - Step 6: Final answer
x = 523,579,478.70
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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.