Finding the Fourth Proportional to 881,649,830.08, 1,216,687,957.92 and 485,218,463.68
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Solution
The fourth proportional to 881,649,830.08, 1,216,687,957.92 and 485,218,463.68 is: 669,607,639.65
Step by Step Solution
- Step 1: Write the proportion equation
881,649,830.08 : 1,216,687,957.92 = 485,218,463.68 : x - Step 2: Convert to fraction form
881,649,830.08/1,216,687,957.92 = 485,218,463.68/x - Step 3: Cross multiply
881,649,830.08x = 1,216,687,957.92 × 485,218,463.68 - Step 4: Simplify right side
881,649,830.08x = 590,359,461,719,898,880 - Step 5: Solve for x
x = 590,359,461,719,898,880/881,649,830.08 - Step 6: Final answer
x = 669,607,639.65
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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.