Finding the Fourth Proportional to 1,127,012,626.44, 1,555,279,254.18 and 625,221,423.12
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Solution
The fourth proportional to 1,127,012,626.44, 1,555,279,254.18 and 625,221,423.12 is: 862,806,578.95
Step by Step Solution
- Step 1: Write the proportion equation
1,127,012,626.44 : 1,555,279,254.18 = 625,221,423.12 : x - Step 2: Convert to fraction form
1,127,012,626.44/1,555,279,254.18 = 625,221,423.12/x - Step 3: Cross multiply
1,127,012,626.44x = 1,555,279,254.18 × 625,221,423.12 - Step 4: Simplify right side
1,127,012,626.44x = 972,393,908,647,431,808 - Step 5: Solve for x
x = 972,393,908,647,431,808/1,127,012,626.44 - Step 6: Final answer
x = 862,806,578.95
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Double scale
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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.