Finding the Fourth Proportional to 665,156.40, 917,855.52 and 374,815.20
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Solution
The fourth proportional to 665,156.40, 917,855.52 and 374,815.20 is: 517,210.99
Step by Step Solution
- Step 1: Write the proportion equation
665,156.40 : 917,855.52 = 374,815.20 : x - Step 2: Convert to fraction form
665,156.40/917,855.52 = 374,815.20/x - Step 3: Cross multiply
665,156.40x = 917,855.52 × 374,815.20 - Step 4: Simplify right side
665,156.40x = 344,026,200,299.90 - Step 5: Solve for x
x = 344,026,200,299.90/665,156.40 - Step 6: Final answer
x = 517,210.99
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1.5x scale
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.