Finding the Fourth Proportional to 420,390.08, 579,986.70 and 323,623.56
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Solution
The fourth proportional to 420,390.08, 579,986.70 and 323,623.56 is: 446,483.80
Step by Step Solution
- Step 1: Write the proportion equation
420,390.08 : 579,986.70 = 323,623.56 : x - Step 2: Convert to fraction form
420,390.08/579,986.70 = 323,623.56/x - Step 3: Cross multiply
420,390.08x = 579,986.70 × 323,623.56 - Step 4: Simplify right side
420,390.08x = 187,697,358,988.53 - Step 5: Solve for x
x = 187,697,358,988.53/420,390.08 - Step 6: Final answer
x = 446,483.80
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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.