Finding the Fourth Proportional to 1,239,420.53, 1,711,959.36 and 1,022,415.59
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Solution
The fourth proportional to 1,239,420.53, 1,711,959.36 and 1,022,415.59 is: 1,412,219.58
Step by Step Solution
- Step 1: Write the proportion equation
1,239,420.53 : 1,711,959.36 = 1,022,415.59 : x - Step 2: Convert to fraction form
1,239,420.53/1,711,959.36 = 1,022,415.59/x - Step 3: Cross multiply
1,239,420.53x = 1,711,959.36 × 1,022,415.59 - Step 4: Simplify right side
1,239,420.53x = 1,750,333,939,110.42 - Step 5: Solve for x
x = 1,750,333,939,110.42/1,239,420.53 - Step 6: Final answer
x = 1,412,219.58
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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.