Finding the Fourth Proportional to 1,281,879.18, 1,768,921.26 and 700,987.02
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Solution
The fourth proportional to 1,281,879.18, 1,768,921.26 and 700,987.02 is: 967,322.71
Step by Step Solution
- Step 1: Write the proportion equation
1,281,879.18 : 1,768,921.26 = 700,987.02 : x - Step 2: Convert to fraction form
1,281,879.18/1,768,921.26 = 700,987.02/x - Step 3: Cross multiply
1,281,879.18x = 1,768,921.26 × 700,987.02 - Step 4: Simplify right side
1,281,879.18x = 1,239,990,842,662.05 - Step 5: Solve for x
x = 1,239,990,842,662.05/1,281,879.18 - Step 6: Final answer
x = 967,322.71
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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.