Finding the Fourth Proportional to 777,312,815.40, 1,165,981,664.70 and 202,884,143.40
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Solution
The fourth proportional to 777,312,815.40, 1,165,981,664.70 and 202,884,143.40 is: 304,329,462.45
Step by Step Solution
- Step 1: Write the proportion equation
777,312,815.40 : 1,165,981,664.70 = 202,884,143.40 : x - Step 2: Convert to fraction form
777,312,815.40/1,165,981,664.70 = 202,884,143.40/x - Step 3: Cross multiply
777,312,815.40x = 1,165,981,664.70 × 202,884,143.40 - Step 4: Simplify right side
777,312,815.40x = 236,559,191,262,765,536 - Step 5: Solve for x
x = 236,559,191,262,765,536/777,312,815.40 - Step 6: Final answer
x = 304,329,462.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.