Finding the Fourth Proportional to 1,579,578,809.80, 2,369,368,214.70 and 1,120,413,785.80
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Solution
The fourth proportional to 1,579,578,809.80, 2,369,368,214.70 and 1,120,413,785.80 is: 1,680,620,678.70
Step by Step Solution
- Step 1: Write the proportion equation
1,579,578,809.80 : 2,369,368,214.70 = 1,120,413,785.80 : x - Step 2: Convert to fraction form
1,579,578,809.80/2,369,368,214.70 = 1,120,413,785.80/x - Step 3: Cross multiply
1,579,578,809.80x = 2,369,368,214.70 × 1,120,413,785.80 - Step 4: Simplify right side
1,579,578,809.80x = 2,654,672,811,386,213,888 - Step 5: Solve for x
x = 2,654,672,811,386,213,888/1,579,578,809.80 - Step 6: Final answer
x = 1,680,620,678.70
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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.