Finding the Fourth Proportional to 765,101.10, 1,145,902.05 and 390,686.70
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Solution
The fourth proportional to 765,101.10, 1,145,902.05 and 390,686.70 is: 585,136.64
Step by Step Solution
- Step 1: Write the proportion equation
765,101.10 : 1,145,902.05 = 390,686.70 : x - Step 2: Convert to fraction form
765,101.10/1,145,902.05 = 390,686.70/x - Step 3: Cross multiply
765,101.10x = 1,145,902.05 × 390,686.70 - Step 4: Simplify right side
765,101.10x = 447,688,690,437.74 - Step 5: Solve for x
x = 447,688,690,437.74/765,101.10 - Step 6: Final answer
x = 585,136.64
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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.