Finding the Fourth Proportional to 1,931,128.97, 2,664,341.51 and 1,115,224.88
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Solution
The fourth proportional to 1,931,128.97, 2,664,341.51 and 1,115,224.88 is: 1,538,654.32
Step by Step Solution
- Step 1: Write the proportion equation
1,931,128.97 : 2,664,341.51 = 1,115,224.88 : x - Step 2: Convert to fraction form
1,931,128.97/2,664,341.51 = 1,115,224.88/x - Step 3: Cross multiply
1,931,128.97x = 2,664,341.51 × 1,115,224.88 - Step 4: Simplify right side
1,931,128.97x = 2,971,339,921,870.94 - Step 5: Solve for x
x = 2,971,339,921,870.94/1,931,128.97 - Step 6: Final answer
x = 1,538,654.32
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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.