Finding the Fourth Proportional to 431,445,974.42, 647,165,058.27 and 136,341,142.74
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Solution
The fourth proportional to 431,445,974.42, 647,165,058.27 and 136,341,142.74 is: 204,510,480.61
Step by Step Solution
- Step 1: Write the proportion equation
431,445,974.42 : 647,165,058.27 = 136,341,142.74 : x - Step 2: Convert to fraction form
431,445,974.42/647,165,058.27 = 136,341,142.74/x - Step 3: Cross multiply
431,445,974.42x = 647,165,058.27 × 136,341,142.74 - Step 4: Simplify right side
431,445,974.42x = 88,235,223,585,930,496 - Step 5: Solve for x
x = 88,235,223,585,930,496/431,445,974.42 - Step 6: Final answer
x = 204,510,480.61
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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.