Finding the Fourth Proportional to 451,652.06, 621,715.20 and 390,370.09
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Solution
The fourth proportional to 451,652.06, 621,715.20 and 390,370.09 is: 537,358.38
Step by Step Solution
- Step 1: Write the proportion equation
451,652.06 : 621,715.20 = 390,370.09 : x - Step 2: Convert to fraction form
451,652.06/621,715.20 = 390,370.09/x - Step 3: Cross multiply
451,652.06x = 621,715.20 × 390,370.09 - Step 4: Simplify right side
451,652.06x = 242,699,018,578.37 - Step 5: Solve for x
x = 242,699,018,578.37/451,652.06 - Step 6: Final answer
x = 537,358.38
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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.