Finding the Fourth Proportional to 792,125,187.20, 1,188,187,780.80 and 720,699,516.80
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Solution
The fourth proportional to 792,125,187.20, 1,188,187,780.80 and 720,699,516.80 is: 1,081,049,275.20
Step by Step Solution
- Step 1: Write the proportion equation
792,125,187.20 : 1,188,187,780.80 = 720,699,516.80 : x - Step 2: Convert to fraction form
792,125,187.20/1,188,187,780.80 = 720,699,516.80/x - Step 3: Cross multiply
792,125,187.20x = 1,188,187,780.80 × 720,699,516.80 - Step 4: Simplify right side
792,125,187.20x = 856,326,359,490,224,256 - Step 5: Solve for x
x = 856,326,359,490,224,256/792,125,187.20 - Step 6: Final answer
x = 1,081,049,275.20
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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.