Finding the Fourth Proportional to 621,438.24, 931,511.28 and 421,774.88
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Solution
The fourth proportional to 621,438.24, 931,511.28 and 421,774.88 is: 632,223.82
Step by Step Solution
- Step 1: Write the proportion equation
621,438.24 : 931,511.28 = 421,774.88 : x - Step 2: Convert to fraction form
621,438.24/931,511.28 = 421,774.88/x - Step 3: Cross multiply
621,438.24x = 931,511.28 × 421,774.88 - Step 4: Simplify right side
621,438.24x = 392,888,058,340.65 - Step 5: Solve for x
x = 392,888,058,340.65/621,438.24 - Step 6: Final answer
x = 632,223.82
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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.