Finding the Fourth Proportional to 426,512,732.79, 639,695,941.59 and 135,314,949.63
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Solution
The fourth proportional to 426,512,732.79, 639,695,941.59 and 135,314,949.63 is: 202,949,214.55
Step by Step Solution
- Step 1: Write the proportion equation
426,512,732.79 : 639,695,941.59 = 135,314,949.63 : x - Step 2: Convert to fraction form
426,512,732.79/639,695,941.59 = 135,314,949.63/x - Step 3: Cross multiply
426,512,732.79x = 639,695,941.59 × 135,314,949.63 - Step 4: Simplify right side
426,512,732.79x = 86,560,424,114,766,272 - Step 5: Solve for x
x = 86,560,424,114,766,272/426,512,732.79 - Step 6: Final answer
x = 202,949,214.55
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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.