Finding the Fourth Proportional to 1,172,412,242.16, 1,617,855,306.84 and 643,772,527.44
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Solution
The fourth proportional to 1,172,412,242.16, 1,617,855,306.84 and 643,772,527.44 is: 888,365,681.00
Step by Step Solution
- Step 1: Write the proportion equation
1,172,412,242.16 : 1,617,855,306.84 = 643,772,527.44 : x - Step 2: Convert to fraction form
1,172,412,242.16/1,617,855,306.84 = 643,772,527.44/x - Step 3: Cross multiply
1,172,412,242.16x = 1,617,855,306.84 × 643,772,527.44 - Step 4: Simplify right side
1,172,412,242.16x = 1,041,530,799,916,603,520 - Step 5: Solve for x
x = 1,041,530,799,916,603,520/1,172,412,242.16 - Step 6: Final answer
x = 888,365,681.00
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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.