Finding the Fourth Proportional to 1,243,812.70, 1,865,719.05 and 402,364.45
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Solution
The fourth proportional to 1,243,812.70, 1,865,719.05 and 402,364.45 is: 603,546.68
Step by Step Solution
- Step 1: Write the proportion equation
1,243,812.70 : 1,865,719.05 = 402,364.45 : x - Step 2: Convert to fraction form
1,243,812.70/1,865,719.05 = 402,364.45/x - Step 3: Cross multiply
1,243,812.70x = 1,865,719.05 × 402,364.45 - Step 4: Simplify right side
1,243,812.70x = 750,699,019,407.77 - Step 5: Solve for x
x = 750,699,019,407.77/1,243,812.70 - Step 6: Final answer
x = 603,546.68
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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.