Finding the Fourth Proportional to 521,631,328.72, 719,867,433.18 and 286,677,719.68
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Solution
The fourth proportional to 521,631,328.72, 719,867,433.18 and 286,677,719.68 is: 395,624,156.09
Step by Step Solution
- Step 1: Write the proportion equation
521,631,328.72 : 719,867,433.18 = 286,677,719.68 : x - Step 2: Convert to fraction form
521,631,328.72/719,867,433.18 = 286,677,719.68/x - Step 3: Cross multiply
521,631,328.72x = 719,867,433.18 × 286,677,719.68 - Step 4: Simplify right side
521,631,328.72x = 206,369,954,215,937,152 - Step 5: Solve for x
x = 206,369,954,215,937,152/521,631,328.72 - Step 6: Final answer
x = 395,624,156.09
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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.