Finding the Fourth Proportional to 1,243,933.60, 1,866,130.80 and 402,512.80
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Solution
The fourth proportional to 1,243,933.60, 1,866,130.80 and 402,512.80 is: 603,843.75
Step by Step Solution
- Step 1: Write the proportion equation
1,243,933.60 : 1,866,130.80 = 402,512.80 : x - Step 2: Convert to fraction form
1,243,933.60/1,866,130.80 = 402,512.80/x - Step 3: Cross multiply
1,243,933.60x = 1,866,130.80 × 402,512.80 - Step 4: Simplify right side
1,243,933.60x = 751,141,533,474.24 - Step 5: Solve for x
x = 751,141,533,474.24/1,243,933.60 - Step 6: Final answer
x = 603,843.75
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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.