Finding the Fourth Proportional to 1,380,458.52, 2,070,984.70 and 688,402.62
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Solution
The fourth proportional to 1,380,458.52, 2,070,984.70 and 688,402.62 is: 1,032,751.99
Step by Step Solution
- Step 1: Write the proportion equation
1,380,458.52 : 2,070,984.70 = 688,402.62 : x - Step 2: Convert to fraction form
1,380,458.52/2,070,984.70 = 688,402.62/x - Step 3: Cross multiply
1,380,458.52x = 2,070,984.70 × 688,402.62 - Step 4: Simplify right side
1,380,458.52x = 1,425,671,290,017.90 - Step 5: Solve for x
x = 1,425,671,290,017.90/1,380,458.52 - Step 6: Final answer
x = 1,032,751.99
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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.