Finding the Fourth Proportional to 1,272,489.12, 1,756,068.58 and 691,751.32
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Solution
The fourth proportional to 1,272,489.12, 1,756,068.58 and 691,751.32 is: 954,635.08
Step by Step Solution
- Step 1: Write the proportion equation
1,272,489.12 : 1,756,068.58 = 691,751.32 : x - Step 2: Convert to fraction form
1,272,489.12/1,756,068.58 = 691,751.32/x - Step 3: Cross multiply
1,272,489.12x = 1,756,068.58 × 691,751.32 - Step 4: Simplify right side
1,272,489.12x = 1,214,762,758,225.53 - Step 5: Solve for x
x = 1,214,762,758,225.53/1,272,489.12 - Step 6: Final answer
x = 954,635.08
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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.