Finding the Fourth Proportional to 460,431,931.75, 690,653,432.44 and 128,418,732.62
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Solution
The fourth proportional to 460,431,931.75, 690,653,432.44 and 128,418,732.62 is: 192,629,642.65
Step by Step Solution
- Step 1: Write the proportion equation
460,431,931.75 : 690,653,432.44 = 128,418,732.62 : x - Step 2: Convert to fraction form
460,431,931.75/690,653,432.44 = 128,418,732.62/x - Step 3: Cross multiply
460,431,931.75x = 690,653,432.44 × 128,418,732.62 - Step 4: Simplify right side
460,431,931.75x = 88,692,838,476,783,184 - Step 5: Solve for x
x = 88,692,838,476,783,184/460,431,931.75 - Step 6: Final answer
x = 192,629,642.65
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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.