Finding the Fourth Proportional to 1,008,970.12, 1,392,315.78 and 556,261.12
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Solution
The fourth proportional to 1,008,970.12, 1,392,315.78 and 556,261.12 is: 767,605.62
Step by Step Solution
- Step 1: Write the proportion equation
1,008,970.12 : 1,392,315.78 = 556,261.12 : x - Step 2: Convert to fraction form
1,008,970.12/1,392,315.78 = 556,261.12/x - Step 3: Cross multiply
1,008,970.12x = 1,392,315.78 × 556,261.12 - Step 4: Simplify right side
1,008,970.12x = 774,491,135,176.47 - Step 5: Solve for x
x = 774,491,135,176.47/1,008,970.12 - Step 6: Final answer
x = 767,605.62
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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.