Finding the Fourth Proportional to 740,038.20, 1,110,575.70 and 319,615.80
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Solution
The fourth proportional to 740,038.20, 1,110,575.70 and 319,615.80 is: 479,647.59
Step by Step Solution
- Step 1: Write the proportion equation
740,038.20 : 1,110,575.70 = 319,615.80 : x - Step 2: Convert to fraction form
740,038.20/1,110,575.70 = 319,615.80/x - Step 3: Cross multiply
740,038.20x = 1,110,575.70 × 319,615.80 - Step 4: Simplify right side
740,038.20x = 354,957,540,816.06 - Step 5: Solve for x
x = 354,957,540,816.06/740,038.20 - Step 6: Final answer
x = 479,647.59
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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.