Finding the Fourth Proportional to 717,145.20, 989,652.24 and 394,848.72
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Solution
The fourth proportional to 717,145.20, 989,652.24 and 394,848.72 is: 544,886.75
Step by Step Solution
- Step 1: Write the proportion equation
717,145.20 : 989,652.24 = 394,848.72 : x - Step 2: Convert to fraction form
717,145.20/989,652.24 = 394,848.72/x - Step 3: Cross multiply
717,145.20x = 989,652.24 × 394,848.72 - Step 4: Simplify right side
717,145.20x = 390,762,920,209.13 - Step 5: Solve for x
x = 390,762,920,209.13/717,145.20 - Step 6: Final answer
x = 544,886.75
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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.