Finding the Fourth Proportional to 1,918,217,375.84, 2,878,473,960.12 and 827,700,443.84
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Solution
The fourth proportional to 1,918,217,375.84, 2,878,473,960.12 and 827,700,443.84 is: 1,242,045,976.84
Step by Step Solution
- Step 1: Write the proportion equation
1,918,217,375.84 : 2,878,473,960.12 = 827,700,443.84 : x - Step 2: Convert to fraction form
1,918,217,375.84/2,878,473,960.12 = 827,700,443.84/x - Step 3: Cross multiply
1,918,217,375.84x = 2,878,473,960.12 × 827,700,443.84 - Step 4: Simplify right side
1,918,217,375.84x = 2,382,514,174,373,206,528 - Step 5: Solve for x
x = 2,382,514,174,373,206,528/1,918,217,375.84 - Step 6: Final answer
x = 1,242,045,976.84
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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.