Finding the Fourth Proportional to 778,728.08, 1,074,874.58 and 456,507.92
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Solution
The fourth proportional to 778,728.08, 1,074,874.58 and 456,507.92 is: 630,115.66
Step by Step Solution
- Step 1: Write the proportion equation
778,728.08 : 1,074,874.58 = 456,507.92 : x - Step 2: Convert to fraction form
778,728.08/1,074,874.58 = 456,507.92/x - Step 3: Cross multiply
778,728.08x = 1,074,874.58 × 456,507.92 - Step 4: Simplify right side
778,728.08x = 490,688,751,119.76 - Step 5: Solve for x
x = 490,688,751,119.76/778,728.08 - Step 6: Final answer
x = 630,115.66
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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.