Finding the Fourth Proportional to 1,038,490.80, 1,557,736.20 and 683,905.20
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Solution
The fourth proportional to 1,038,490.80, 1,557,736.20 and 683,905.20 is: 1,025,857.80
Step by Step Solution
- Step 1: Write the proportion equation
1,038,490.80 : 1,557,736.20 = 683,905.20 : x - Step 2: Convert to fraction form
1,038,490.80/1,557,736.20 = 683,905.20/x - Step 3: Cross multiply
1,038,490.80x = 1,557,736.20 × 683,905.20 - Step 4: Simplify right side
1,038,490.80x = 1,065,343,887,408.24 - Step 5: Solve for x
x = 1,065,343,887,408.24/1,038,490.80 - Step 6: Final answer
x = 1,025,857.80
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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.