Finding the Fourth Proportional to 1,918,725.14, 2,877,123.80 and 638,880.18
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Solution
The fourth proportional to 1,918,725.14, 2,877,123.80 and 638,880.18 is: 957,999.32
Step by Step Solution
- Step 1: Write the proportion equation
1,918,725.14 : 2,877,123.80 = 638,880.18 : x - Step 2: Convert to fraction form
1,918,725.14/2,877,123.80 = 638,880.18/x - Step 3: Cross multiply
1,918,725.14x = 2,877,123.80 × 638,880.18 - Step 4: Simplify right side
1,918,725.14x = 1,838,137,371,226.28 - Step 5: Solve for x
x = 1,838,137,371,226.28/1,918,725.14 - Step 6: Final answer
x = 957,999.32
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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.