Finding the Fourth Proportional to 1,290,406.24, 1,780,714.08 and 709,624.48
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Solution
The fourth proportional to 1,290,406.24, 1,780,714.08 and 709,624.48 is: 979,256.19
Step by Step Solution
- Step 1: Write the proportion equation
1,290,406.24 : 1,780,714.08 = 709,624.48 : x - Step 2: Convert to fraction form
1,290,406.24/1,780,714.08 = 709,624.48/x - Step 3: Cross multiply
1,290,406.24x = 1,780,714.08 × 709,624.48 - Step 4: Simplify right side
1,290,406.24x = 1,263,638,303,048.68 - Step 5: Solve for x
x = 1,263,638,303,048.68/1,290,406.24 - Step 6: Final answer
x = 979,256.19
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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.