Finding the Fourth Proportional to 468,112,161.03, 645,749,867.70 and 289,438,934.31
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Solution
The fourth proportional to 468,112,161.03, 645,749,867.70 and 289,438,934.31 is: 399,274,295.99
Step by Step Solution
- Step 1: Write the proportion equation
468,112,161.03 : 645,749,867.70 = 289,438,934.31 : x - Step 2: Convert to fraction form
468,112,161.03/645,749,867.70 = 289,438,934.31/x - Step 3: Cross multiply
468,112,161.03x = 645,749,867.70 × 289,438,934.31 - Step 4: Simplify right side
468,112,161.03x = 186,905,153,537,911,520 - Step 5: Solve for x
x = 186,905,153,537,911,520/468,112,161.03 - Step 6: Final answer
x = 399,274,295.99
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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.