Finding the Fourth Proportional to 1,392,229,731.78, 2,088,345,154.14 and 342,988,345.62
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Solution
The fourth proportional to 1,392,229,731.78, 2,088,345,154.14 and 342,988,345.62 is: 514,482,655.52
Step by Step Solution
- Step 1: Write the proportion equation
1,392,229,731.78 : 2,088,345,154.14 = 342,988,345.62 : x - Step 2: Convert to fraction form
1,392,229,731.78/2,088,345,154.14 = 342,988,345.62/x - Step 3: Cross multiply
1,392,229,731.78x = 2,088,345,154.14 × 342,988,345.62 - Step 4: Simplify right side
1,392,229,731.78x = 716,278,049,502,022,528 - Step 5: Solve for x
x = 716,278,049,502,022,528/1,392,229,731.78 - Step 6: Final answer
x = 514,482,655.52
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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.