Finding the Fourth Proportional to 1,038,812.10, 1,556,989.35 and 439,772.10
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Solution
The fourth proportional to 1,038,812.10, 1,556,989.35 and 439,772.10 is: 659,137.95
Step by Step Solution
- Step 1: Write the proportion equation
1,038,812.10 : 1,556,989.35 = 439,772.10 : x - Step 2: Convert to fraction form
1,038,812.10/1,556,989.35 = 439,772.10/x - Step 3: Cross multiply
1,038,812.10x = 1,556,989.35 × 439,772.10 - Step 4: Simplify right side
1,038,812.10x = 684,720,476,127.14 - Step 5: Solve for x
x = 684,720,476,127.14/1,038,812.10 - Step 6: Final answer
x = 659,137.95
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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.