Finding the Fourth Proportional to 1,213,276.70, 1,819,915.05 and 371,719.10
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Solution
The fourth proportional to 1,213,276.70, 1,819,915.05 and 371,719.10 is: 557,578.65
Step by Step Solution
- Step 1: Write the proportion equation
1,213,276.70 : 1,819,915.05 = 371,719.10 : x - Step 2: Convert to fraction form
1,213,276.70/1,819,915.05 = 371,719.10/x - Step 3: Cross multiply
1,213,276.70x = 1,819,915.05 × 371,719.10 - Step 4: Simplify right side
1,213,276.70x = 676,497,184,462.46 - Step 5: Solve for x
x = 676,497,184,462.46/1,213,276.70 - Step 6: Final answer
x = 557,578.65
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1.5x scale
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.