Finding the Fourth Proportional to 808,201,420.20, 1,212,302,130.30 and 614,491,175.70
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Solution
The fourth proportional to 808,201,420.20, 1,212,302,130.30 and 614,491,175.70 is: 921,736,763.55
Step by Step Solution
- Step 1: Write the proportion equation
808,201,420.20 : 1,212,302,130.30 = 614,491,175.70 : x - Step 2: Convert to fraction form
808,201,420.20/1,212,302,130.30 = 614,491,175.70/x - Step 3: Cross multiply
808,201,420.20x = 1,212,302,130.30 × 614,491,175.70 - Step 4: Simplify right side
808,201,420.20x = 744,948,961,351,661,568 - Step 5: Solve for x
x = 744,948,961,351,661,568/808,201,420.20 - Step 6: Final answer
x = 921,736,763.55
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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.