Finding the Fourth Proportional to 1,038,220, 1,557,320.10 and 328,247.92
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Solution
The fourth proportional to 1,038,220, 1,557,320.10 and 328,247.92 is: 492,368.75
Step by Step Solution
- Step 1: Write the proportion equation
1,038,220 : 1,557,320.10 = 328,247.92 : x - Step 2: Convert to fraction form
1,038,220/1,557,320.10 = 328,247.92/x - Step 3: Cross multiply
1,038,220x = 1,557,320.10 × 328,247.92 - Step 4: Simplify right side
1,038,220x = 511,187,083,599.19 - Step 5: Solve for x
x = 511,187,083,599.19/1,038,220 - Step 6: Final answer
x = 492,368.75
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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.