Finding the Fourth Proportional to 689,351.36, 951,282.05 and 383,419.09
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Solution
The fourth proportional to 689,351.36, 951,282.05 and 383,419.09 is: 529,105.64
Step by Step Solution
- Step 1: Write the proportion equation
689,351.36 : 951,282.05 = 383,419.09 : x - Step 2: Convert to fraction form
689,351.36/951,282.05 = 383,419.09/x - Step 3: Cross multiply
689,351.36x = 951,282.05 × 383,419.09 - Step 4: Simplify right side
689,351.36x = 364,739,693,649.03 - Step 5: Solve for x
x = 364,739,693,649.03/689,351.36 - Step 6: Final answer
x = 529,105.64
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.