Finding the Fourth Proportional to 1,069,545.40, 1,605,225.30 and 438,911.80
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Solution
The fourth proportional to 1,069,545.40, 1,605,225.30 and 438,911.80 is: 658,739.99
Step by Step Solution
- Step 1: Write the proportion equation
1,069,545.40 : 1,605,225.30 = 438,911.80 : x - Step 2: Convert to fraction form
1,069,545.40/1,605,225.30 = 438,911.80/x - Step 3: Cross multiply
1,069,545.40x = 1,605,225.30 × 438,911.80 - Step 4: Simplify right side
1,069,545.40x = 704,552,325,828.54 - Step 5: Solve for x
x = 704,552,325,828.54/1,069,545.40 - Step 6: Final answer
x = 658,739.99
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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.