Finding the Fourth Proportional to 1,020,789.19, 1,531,183.79 and 272,815.75
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Solution
The fourth proportional to 1,020,789.19, 1,531,183.79 and 272,815.75 is: 409,223.63
Step by Step Solution
- Step 1: Write the proportion equation
1,020,789.19 : 1,531,183.79 = 272,815.75 : x - Step 2: Convert to fraction form
1,020,789.19/1,531,183.79 = 272,815.75/x - Step 3: Cross multiply
1,020,789.19x = 1,531,183.79 × 272,815.75 - Step 4: Simplify right side
1,020,789.19x = 417,731,054,056.69 - Step 5: Solve for x
x = 417,731,054,056.69/1,020,789.19 - Step 6: Final answer
x = 409,223.63
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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.