Finding the Fourth Proportional to 387,252,969.84, 534,409,109.28 and 213,412,713.84
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Solution
The fourth proportional to 387,252,969.84, 534,409,109.28 and 213,412,713.84 is: 294,509,551.11
Step by Step Solution
- Step 1: Write the proportion equation
387,252,969.84 : 534,409,109.28 = 213,412,713.84 : x - Step 2: Convert to fraction form
387,252,969.84/534,409,109.28 = 213,412,713.84/x - Step 3: Cross multiply
387,252,969.84x = 534,409,109.28 × 213,412,713.84 - Step 4: Simplify right side
387,252,969.84x = 114,049,698,312,261,920 - Step 5: Solve for x
x = 114,049,698,312,261,920/387,252,969.84 - Step 6: Final answer
x = 294,509,551.11
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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.