Finding the Fourth Proportional to 520,475.10, 781,879.05 and 499,220.70
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Solution
The fourth proportional to 520,475.10, 781,879.05 and 499,220.70 is: 749,949.82
Step by Step Solution
- Step 1: Write the proportion equation
520,475.10 : 781,879.05 = 499,220.70 : x - Step 2: Convert to fraction form
520,475.10/781,879.05 = 499,220.70/x - Step 3: Cross multiply
520,475.10x = 781,879.05 × 499,220.70 - Step 4: Simplify right side
520,475.10x = 390,330,206,656.34 - Step 5: Solve for x
x = 390,330,206,656.34/520,475.10 - Step 6: Final answer
x = 749,949.82
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1.5x scale
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.