Finding the Fourth Proportional to 679,358.70, 1,019,038.05 and 279,793.80
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Solution
The fourth proportional to 679,358.70, 1,019,038.05 and 279,793.80 is: 419,690.70
Step by Step Solution
- Step 1: Write the proportion equation
679,358.70 : 1,019,038.05 = 279,793.80 : x - Step 2: Convert to fraction form
679,358.70/1,019,038.05 = 279,793.80/x - Step 3: Cross multiply
679,358.70x = 1,019,038.05 × 279,793.80 - Step 4: Simplify right side
679,358.70x = 285,120,528,354.09 - Step 5: Solve for x
x = 285,120,528,354.09/679,358.70 - Step 6: Final answer
x = 419,690.70
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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.