Finding the Fourth Proportional to 740,130.12, 1,021,446.84 and 417,919.32
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Solution
The fourth proportional to 740,130.12, 1,021,446.84 and 417,919.32 is: 576,766.65
Step by Step Solution
- Step 1: Write the proportion equation
740,130.12 : 1,021,446.84 = 417,919.32 : x - Step 2: Convert to fraction form
740,130.12/1,021,446.84 = 417,919.32/x - Step 3: Cross multiply
740,130.12x = 1,021,446.84 × 417,919.32 - Step 4: Simplify right side
740,130.12x = 426,882,368,788.95 - Step 5: Solve for x
x = 426,882,368,788.95/740,130.12 - Step 6: Final answer
x = 576,766.65
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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.