Finding the Fourth Proportional to 1,132,990,423.61, 1,563,575,038.07 and 631,198,923.21
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Solution
The fourth proportional to 1,132,990,423.61, 1,563,575,038.07 and 631,198,923.21 is: 871,081,396.47
Step by Step Solution
- Step 1: Write the proportion equation
1,132,990,423.61 : 1,563,575,038.07 = 631,198,923.21 : x - Step 2: Convert to fraction form
1,132,990,423.61/1,563,575,038.07 = 631,198,923.21/x - Step 3: Cross multiply
1,132,990,423.61x = 1,563,575,038.07 × 631,198,923.21 - Step 4: Simplify right side
1,132,990,423.61x = 986,926,880,384,662,912 - Step 5: Solve for x
x = 986,926,880,384,662,912/1,132,990,423.61 - Step 6: Final answer
x = 871,081,396.47
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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.