Finding the Fourth Proportional to 520,078.70, 778,390.05 and 377,518.70
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Solution
The fourth proportional to 520,078.70, 778,390.05 and 377,518.70 is: 565,023.72
Step by Step Solution
- Step 1: Write the proportion equation
520,078.70 : 778,390.05 = 377,518.70 : x - Step 2: Convert to fraction form
520,078.70/778,390.05 = 377,518.70/x - Step 3: Cross multiply
520,078.70x = 778,390.05 × 377,518.70 - Step 4: Simplify right side
520,078.70x = 293,856,799,768.94 - Step 5: Solve for x
x = 293,856,799,768.94/520,078.70 - Step 6: Final answer
x = 565,023.72
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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.