Finding the Fourth Proportional to 929,346.21, 1,282,419.14 and 521,392.95
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Solution
The fourth proportional to 929,346.21, 1,282,419.14 and 521,392.95 is: 719,478.15
Step by Step Solution
- Step 1: Write the proportion equation
929,346.21 : 1,282,419.14 = 521,392.95 : x - Step 2: Convert to fraction form
929,346.21/1,282,419.14 = 521,392.95/x - Step 3: Cross multiply
929,346.21x = 1,282,419.14 × 521,392.95 - Step 4: Simplify right side
929,346.21x = 668,644,295,934.10 - Step 5: Solve for x
x = 668,644,295,934.10/929,346.21 - Step 6: Final answer
x = 719,478.15
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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.