Finding the Fourth Proportional to 1,127,012,615.97, 1,555,279,239.68 and 625,221,412.62
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Solution
The fourth proportional to 1,127,012,615.97, 1,555,279,239.68 and 625,221,412.62 is: 862,806,564.42
Step by Step Solution
- Step 1: Write the proportion equation
1,127,012,615.97 : 1,555,279,239.68 = 625,221,412.62 : x - Step 2: Convert to fraction form
1,127,012,615.97/1,555,279,239.68 = 625,221,412.62/x - Step 3: Cross multiply
1,127,012,615.97x = 1,555,279,239.68 × 625,221,412.62 - Step 4: Simplify right side
1,127,012,615.97x = 972,393,883,248,163,072 - Step 5: Solve for x
x = 972,393,883,248,163,072/1,127,012,615.97 - Step 6: Final answer
x = 862,806,564.42
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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.