Finding the Fourth Proportional to 1,079,349,680.80, 1,489,503,057.68 and 584,312,389.12
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Solution
The fourth proportional to 1,079,349,680.80, 1,489,503,057.68 and 584,312,389.12 is: 806,351,366.68
Step by Step Solution
- Step 1: Write the proportion equation
1,079,349,680.80 : 1,489,503,057.68 = 584,312,389.12 : x - Step 2: Convert to fraction form
1,079,349,680.80/1,489,503,057.68 = 584,312,389.12/x - Step 3: Cross multiply
1,079,349,680.80x = 1,489,503,057.68 × 584,312,389.12 - Step 4: Simplify right side
1,079,349,680.80x = 870,335,090,234,546,048 - Step 5: Solve for x
x = 870,335,090,234,546,048/1,079,349,680.80 - Step 6: Final answer
x = 806,351,366.68
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.