Finding the Fourth Proportional to 1,290,125.31, 1,780,335.04 and 709,349.18
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Solution
The fourth proportional to 1,290,125.31, 1,780,335.04 and 709,349.18 is: 978,881.03
Step by Step Solution
- Step 1: Write the proportion equation
1,290,125.31 : 1,780,335.04 = 709,349.18 : x - Step 2: Convert to fraction form
1,290,125.31/1,780,335.04 = 709,349.18/x - Step 3: Cross multiply
1,290,125.31x = 1,780,335.04 × 709,349.18 - Step 4: Simplify right side
1,290,125.31x = 1,262,879,197,164.49 - Step 5: Solve for x
x = 1,262,879,197,164.49/1,290,125.31 - Step 6: Final answer
x = 978,881.03
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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.