Finding the Fourth Proportional to 1,128,427.10, 1,557,231.27 and 619,133.12
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Solution
The fourth proportional to 1,128,427.10, 1,557,231.27 and 619,133.12 is: 854,404.73
Step by Step Solution
- Step 1: Write the proportion equation
1,128,427.10 : 1,557,231.27 = 619,133.12 : x - Step 2: Convert to fraction form
1,128,427.10/1,557,231.27 = 619,133.12/x - Step 3: Cross multiply
1,128,427.10x = 1,557,231.27 × 619,133.12 - Step 4: Simplify right side
1,128,427.10x = 964,133,454,756.66 - Step 5: Solve for x
x = 964,133,454,756.66/1,128,427.10 - Step 6: Final answer
x = 854,404.73
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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.