Finding the Fourth Proportional to 1,290,501.58, 1,780,881.36 and 717,536.74
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Solution
The fourth proportional to 1,290,501.58, 1,780,881.36 and 717,536.74 is: 990,194.68
Step by Step Solution
- Step 1: Write the proportion equation
1,290,501.58 : 1,780,881.36 = 717,536.74 : x - Step 2: Convert to fraction form
1,290,501.58/1,780,881.36 = 717,536.74/x - Step 3: Cross multiply
1,290,501.58x = 1,780,881.36 × 717,536.74 - Step 4: Simplify right side
1,290,501.58x = 1,277,847,805,381.17 - Step 5: Solve for x
x = 1,277,847,805,381.17/1,290,501.58 - Step 6: Final answer
x = 990,194.68
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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.