Finding the Fourth Proportional to 645,427.19, 968,134.61 and 392,779.49
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Solution
The fourth proportional to 645,427.19, 968,134.61 and 392,779.49 is: 589,165.47
Step by Step Solution
- Step 1: Write the proportion equation
645,427.19 : 968,134.61 = 392,779.49 : x - Step 2: Convert to fraction form
645,427.19/968,134.61 = 392,779.49/x - Step 3: Cross multiply
645,427.19x = 968,134.61 × 392,779.49 - Step 4: Simplify right side
645,427.19x = 380,263,414,508.43 - Step 5: Solve for x
x = 380,263,414,508.43/645,427.19 - Step 6: Final answer
x = 589,165.47
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.