Finding the Fourth Proportional to 1,378,454.76, 1,902,354.66 and 774,881.64
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Solution
The fourth proportional to 1,378,454.76, 1,902,354.66 and 774,881.64 is: 1,069,385.62
Step by Step Solution
- Step 1: Write the proportion equation
1,378,454.76 : 1,902,354.66 = 774,881.64 : x - Step 2: Convert to fraction form
1,378,454.76/1,902,354.66 = 774,881.64/x - Step 3: Cross multiply
1,378,454.76x = 1,902,354.66 × 774,881.64 - Step 4: Simplify right side
1,378,454.76x = 1,474,099,698,802.44 - Step 5: Solve for x
x = 1,474,099,698,802.44/1,378,454.76 - Step 6: Final answer
x = 1,069,385.62
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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.