Finding the Fourth Proportional to 2,106,854.68, 2,907,438.06 and 1,139,963.80
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Solution
The fourth proportional to 2,106,854.68, 2,907,438.06 and 1,139,963.80 is: 1,573,138.47
Step by Step Solution
- Step 1: Write the proportion equation
2,106,854.68 : 2,907,438.06 = 1,139,963.80 : x - Step 2: Convert to fraction form
2,106,854.68/2,907,438.06 = 1,139,963.80/x - Step 3: Cross multiply
2,106,854.68x = 2,907,438.06 × 1,139,963.80 - Step 4: Simplify right side
2,106,854.68x = 3,314,374,139,142.23 - Step 5: Solve for x
x = 3,314,374,139,142.23/2,106,854.68 - Step 6: Final answer
x = 1,573,138.47
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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.