Finding the Fourth Proportional to 1,127,012,634.49, 1,555,279,265.24 and 625,221,431.13
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Solution
The fourth proportional to 1,127,012,634.49, 1,555,279,265.24 and 625,221,431.13 is: 862,806,589.97
Step by Step Solution
- Step 1: Write the proportion equation
1,127,012,634.49 : 1,555,279,265.24 = 625,221,431.13 : x - Step 2: Convert to fraction form
1,127,012,634.49/1,555,279,265.24 = 625,221,431.13/x - Step 3: Cross multiply
1,127,012,634.49x = 1,555,279,265.24 × 625,221,431.13 - Step 4: Simplify right side
1,127,012,634.49x = 972,393,928,020,167,680 - Step 5: Solve for x
x = 972,393,928,020,167,680/1,127,012,634.49 - Step 6: Final answer
x = 862,806,589.97
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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.