Finding the Fourth Proportional to 1,378,972.72, 1,902,964.08 and 775,360.72
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Solution
The fourth proportional to 1,378,972.72, 1,902,964.08 and 775,360.72 is: 1,069,987.52
Step by Step Solution
- Step 1: Write the proportion equation
1,378,972.72 : 1,902,964.08 = 775,360.72 : x - Step 2: Convert to fraction form
1,378,972.72/1,902,964.08 = 775,360.72/x - Step 3: Cross multiply
1,378,972.72x = 1,902,964.08 × 775,360.72 - Step 4: Simplify right side
1,378,972.72x = 1,475,483,599,202.94 - Step 5: Solve for x
x = 1,475,483,599,202.94/1,378,972.72 - Step 6: Final answer
x = 1,069,987.52
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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.