Finding the Fourth Proportional to 1,127,447,992.50, 1,555,875,047.97 and 625,732,528.02
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Solution
The fourth proportional to 1,127,447,992.50, 1,555,875,047.97 and 625,732,528.02 is: 863,509,122.84
Step by Step Solution
- Step 1: Write the proportion equation
1,127,447,992.50 : 1,555,875,047.97 = 625,732,528.02 : x - Step 2: Convert to fraction form
1,127,447,992.50/1,555,875,047.97 = 625,732,528.02/x - Step 3: Cross multiply
1,127,447,992.50x = 1,555,875,047.97 × 625,732,528.02 - Step 4: Simplify right side
1,127,447,992.50x = 973,561,627,049,506,816 - Step 5: Solve for x
x = 973,561,627,049,506,816/1,127,447,992.50 - Step 6: Final answer
x = 863,509,122.84
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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.