Finding the Fourth Proportional to 928,639,135.52, 1,391,428,143.12 and 539,369,231.84
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Solution
The fourth proportional to 928,639,135.52, 1,391,428,143.12 and 539,369,231.84 is: 808,164,872.67
Step by Step Solution
- Step 1: Write the proportion equation
928,639,135.52 : 1,391,428,143.12 = 539,369,231.84 : x - Step 2: Convert to fraction form
928,639,135.52/1,391,428,143.12 = 539,369,231.84/x - Step 3: Cross multiply
928,639,135.52x = 1,391,428,143.12 × 539,369,231.84 - Step 4: Simplify right side
928,639,135.52x = 750,493,528,715,191,936 - Step 5: Solve for x
x = 750,493,528,715,191,936/928,639,135.52 - Step 6: Final answer
x = 808,164,872.67
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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.