Finding the Fourth Proportional to 808,381,330.40, 1,212,571,995.60 and 290,828,655.20
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Solution
The fourth proportional to 808,381,330.40, 1,212,571,995.60 and 290,828,655.20 is: 436,242,982.80
Step by Step Solution
- Step 1: Write the proportion equation
808,381,330.40 : 1,212,571,995.60 = 290,828,655.20 : x - Step 2: Convert to fraction form
808,381,330.40/1,212,571,995.60 = 290,828,655.20/x - Step 3: Cross multiply
808,381,330.40x = 1,212,571,995.60 × 290,828,655.20 - Step 4: Simplify right side
808,381,330.40x = 352,650,682,813,528,256 - Step 5: Solve for x
x = 352,650,682,813,528,256/808,381,330.40 - Step 6: Final answer
x = 436,242,982.80
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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.