Finding the Fourth Proportional to 1,246,875,543.18, 1,720,687,126.56 and 703,830,816.57
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Solution
The fourth proportional to 1,246,875,543.18, 1,720,687,126.56 and 703,830,816.57 is: 971,285,892.94
Step by Step Solution
- Step 1: Write the proportion equation
1,246,875,543.18 : 1,720,687,126.56 = 703,830,816.57 : x - Step 2: Convert to fraction form
1,246,875,543.18/1,720,687,126.56 = 703,830,816.57/x - Step 3: Cross multiply
1,246,875,543.18x = 1,720,687,126.56 × 703,830,816.57 - Step 4: Simplify right side
1,246,875,543.18x = 1,211,072,625,339,525,376 - Step 5: Solve for x
x = 1,211,072,625,339,525,376/1,246,875,543.18 - Step 6: Final answer
x = 971,285,892.94
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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.