Finding the Fourth Proportional to 390,037.80, 585,056.70 and 363,793.80
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Solution
The fourth proportional to 390,037.80, 585,056.70 and 363,793.80 is: 545,690.70
Step by Step Solution
- Step 1: Write the proportion equation
390,037.80 : 585,056.70 = 363,793.80 : x - Step 2: Convert to fraction form
390,037.80/585,056.70 = 363,793.80/x - Step 3: Cross multiply
390,037.80x = 585,056.70 × 363,793.80 - Step 4: Simplify right side
390,037.80x = 212,840,000,108.46 - Step 5: Solve for x
x = 212,840,000,108.46/390,037.80 - Step 6: Final answer
x = 545,690.70
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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.