Finding the Fourth Proportional to 1,555,911,976.94, 2,147,164,952.99 and 841,447,514.74
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Solution
The fourth proportional to 1,555,911,976.94, 2,147,164,952.99 and 841,447,514.74 is: 1,161,201,044.92
Step by Step Solution
- Step 1: Write the proportion equation
1,555,911,976.94 : 2,147,164,952.99 = 841,447,514.74 : x - Step 2: Convert to fraction form
1,555,911,976.94/2,147,164,952.99 = 841,447,514.74/x - Step 3: Cross multiply
1,555,911,976.94x = 2,147,164,952.99 × 841,447,514.74 - Step 4: Simplify right side
1,555,911,976.94x = 1,806,726,613,420,689,152 - Step 5: Solve for x
x = 1,806,726,613,420,689,152/1,555,911,976.94 - Step 6: Final answer
x = 1,161,201,044.92
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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.