Finding the Fourth Proportional to 1,430,989.12, 1,974,799.20 and 786,470.50
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Solution
The fourth proportional to 1,430,989.12, 1,974,799.20 and 786,470.50 is: 1,085,348.09
Step by Step Solution
- Step 1: Write the proportion equation
1,430,989.12 : 1,974,799.20 = 786,470.50 : x - Step 2: Convert to fraction form
1,430,989.12/1,974,799.20 = 786,470.50/x - Step 3: Cross multiply
1,430,989.12x = 1,974,799.20 × 786,470.50 - Step 4: Simplify right side
1,430,989.12x = 1,553,121,314,223.60 - Step 5: Solve for x
x = 1,553,121,314,223.60/1,430,989.12 - Step 6: Final answer
x = 1,085,348.09
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.