Finding the Fourth Proportional to 763,351.80, 1,145,027.70 and 390,103.80
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Solution
The fourth proportional to 763,351.80, 1,145,027.70 and 390,103.80 is: 585,155.70
Step by Step Solution
- Step 1: Write the proportion equation
763,351.80 : 1,145,027.70 = 390,103.80 : x - Step 2: Convert to fraction form
763,351.80/1,145,027.70 = 390,103.80/x - Step 3: Cross multiply
763,351.80x = 1,145,027.70 × 390,103.80 - Step 4: Simplify right side
763,351.80x = 446,679,656,875.26 - Step 5: Solve for x
x = 446,679,656,875.26/763,351.80 - Step 6: Final answer
x = 585,155.70
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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.