Finding the Fourth Proportional to 2,165,331,519.12, 2,988,159,707.88 and 1,175,257,140.24
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Solution
The fourth proportional to 2,165,331,519.12, 2,988,159,707.88 and 1,175,257,140.24 is: 1,621,856,053.84
Step by Step Solution
- Step 1: Write the proportion equation
2,165,331,519.12 : 2,988,159,707.88 = 1,175,257,140.24 : x - Step 2: Convert to fraction form
2,165,331,519.12/2,988,159,707.88 = 1,175,257,140.24/x - Step 3: Cross multiply
2,165,331,519.12x = 2,988,159,707.88 × 1,175,257,140.24 - Step 4: Simplify right side
2,165,331,519.12x = 3,511,856,032,863,442,944 - Step 5: Solve for x
x = 3,511,856,032,863,442,944/2,165,331,519.12 - Step 6: Final answer
x = 1,621,856,053.84
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1.5x scale
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.