Finding the Fourth Proportional to 758,142,956.78, 1,137,283,835.97 and 212,880,816.62
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Solution
The fourth proportional to 758,142,956.78, 1,137,283,835.97 and 212,880,816.62 is: 319,340,712.15
Step by Step Solution
- Step 1: Write the proportion equation
758,142,956.78 : 1,137,283,835.97 = 212,880,816.62 : x - Step 2: Convert to fraction form
758,142,956.78/1,137,283,835.97 = 212,880,816.62/x - Step 3: Cross multiply
758,142,956.78x = 1,137,283,835.97 × 212,880,816.62 - Step 4: Simplify right side
758,142,956.78x = 242,105,911,730,019,744 - Step 5: Solve for x
x = 242,105,911,730,019,744/758,142,956.78 - Step 6: Final answer
x = 319,340,712.15
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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.