Finding the Fourth Proportional to 1,072,438,843.99, 1,479,983,302.81 and 589,651,193.16
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Solution
The fourth proportional to 1,072,438,843.99, 1,479,983,302.81 and 589,651,193.16 is: 813,728,377.38
Step by Step Solution
- Step 1: Write the proportion equation
1,072,438,843.99 : 1,479,983,302.81 = 589,651,193.16 : x - Step 2: Convert to fraction form
1,072,438,843.99/1,479,983,302.81 = 589,651,193.16/x - Step 3: Cross multiply
1,072,438,843.99x = 1,479,983,302.81 × 589,651,193.16 - Step 4: Simplify right side
1,072,438,843.99x = 872,673,920,360,327,040 - Step 5: Solve for x
x = 872,673,920,360,327,040/1,072,438,843.99 - Step 6: Final answer
x = 813,728,377.38
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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.