Finding the Fourth Proportional to 1,288,670.80, 1,778,308.12 and 772,709.44
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Solution
The fourth proportional to 1,288,670.80, 1,778,308.12 and 772,709.44 is: 1,066,304.50
Step by Step Solution
- Step 1: Write the proportion equation
1,288,670.80 : 1,778,308.12 = 772,709.44 : x - Step 2: Convert to fraction form
1,288,670.80/1,778,308.12 = 772,709.44/x - Step 3: Cross multiply
1,288,670.80x = 1,778,308.12 × 772,709.44 - Step 4: Simplify right side
1,288,670.80x = 1,374,115,471,552.65 - Step 5: Solve for x
x = 1,374,115,471,552.65/1,288,670.80 - Step 6: Final answer
x = 1,066,304.50
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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.