Finding the Fourth Proportional to 1,038,512.70, 1,557,769.05 and 478,640.70
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Solution
The fourth proportional to 1,038,512.70, 1,557,769.05 and 478,640.70 is: 717,961.05
Step by Step Solution
- Step 1: Write the proportion equation
1,038,512.70 : 1,557,769.05 = 478,640.70 : x - Step 2: Convert to fraction form
1,038,512.70/1,557,769.05 = 478,640.70/x - Step 3: Cross multiply
1,038,512.70x = 1,557,769.05 × 478,640.70 - Step 4: Simplify right side
1,038,512.70x = 745,611,668,530.34 - Step 5: Solve for x
x = 745,611,668,530.34/1,038,512.70 - Step 6: Final answer
x = 717,961.05
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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.