Finding the Fourth Proportional to 1,277,299,748.14, 1,915,941,582.18 and 687,367,872.97
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Solution
The fourth proportional to 1,277,299,748.14, 1,915,941,582.18 and 687,367,872.97 is: 1,031,047,482.78
Step by Step Solution
- Step 1: Write the proportion equation
1,277,299,748.14 : 1,915,941,582.18 = 687,367,872.97 : x - Step 2: Convert to fraction form
1,277,299,748.14/1,915,941,582.18 = 687,367,872.97/x - Step 3: Cross multiply
1,277,299,748.14x = 1,915,941,582.18 × 687,367,872.97 - Step 4: Simplify right side
1,277,299,748.14x = 1,316,956,690,083,897,600 - Step 5: Solve for x
x = 1,316,956,690,083,897,600/1,277,299,748.14 - Step 6: Final answer
x = 1,031,047,482.78
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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.