Finding the Fourth Proportional to 1,258,137.40, 1,887,206.10 and 977,855.80
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Solution
The fourth proportional to 1,258,137.40, 1,887,206.10 and 977,855.80 is: 1,466,783.70
Step by Step Solution
- Step 1: Write the proportion equation
1,258,137.40 : 1,887,206.10 = 977,855.80 : x - Step 2: Convert to fraction form
1,258,137.40/1,887,206.10 = 977,855.80/x - Step 3: Cross multiply
1,258,137.40x = 1,887,206.10 × 977,855.80 - Step 4: Simplify right side
1,258,137.40x = 1,845,415,430,680.38 - Step 5: Solve for x
x = 1,845,415,430,680.38/1,258,137.40 - Step 6: Final answer
x = 1,466,783.70
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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.