Finding the Fourth Proportional to 651,877.20, 977,815.80 and 430,261.20
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Solution
The fourth proportional to 651,877.20, 977,815.80 and 430,261.20 is: 645,391.80
Step by Step Solution
- Step 1: Write the proportion equation
651,877.20 : 977,815.80 = 430,261.20 : x - Step 2: Convert to fraction form
651,877.20/977,815.80 = 430,261.20/x - Step 3: Cross multiply
651,877.20x = 977,815.80 × 430,261.20 - Step 4: Simplify right side
651,877.20x = 420,716,199,486.96 - Step 5: Solve for x
x = 420,716,199,486.96/651,877.20 - Step 6: Final answer
x = 645,391.80
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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.