Finding the Fourth Proportional to 420,556.74, 580,357.14 and 386,701.98
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Solution
The fourth proportional to 420,556.74, 580,357.14 and 386,701.98 is: 533,638.47
Step by Step Solution
- Step 1: Write the proportion equation
420,556.74 : 580,357.14 = 386,701.98 : x - Step 2: Convert to fraction form
420,556.74/580,357.14 = 386,701.98/x - Step 3: Cross multiply
420,556.74x = 580,357.14 × 386,701.98 - Step 4: Simplify right side
420,556.74x = 224,425,255,145.14 - Step 5: Solve for x
x = 224,425,255,145.14/420,556.74 - Step 6: Final answer
x = 533,638.47
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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.