Finding the Fourth Proportional to 1,292,271.65, 1,938,696.56 and 393,783.70
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Solution
The fourth proportional to 1,292,271.65, 1,938,696.56 and 393,783.70 is: 590,763.65
Step by Step Solution
- Step 1: Write the proportion equation
1,292,271.65 : 1,938,696.56 = 393,783.70 : x - Step 2: Convert to fraction form
1,292,271.65/1,938,696.56 = 393,783.70/x - Step 3: Cross multiply
1,292,271.65x = 1,938,696.56 × 393,783.70 - Step 4: Simplify right side
1,292,271.65x = 763,427,109,984.04 - Step 5: Solve for x
x = 763,427,109,984.04/1,292,271.65 - Step 6: Final answer
x = 590,763.65
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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.