Finding the Fourth Proportional to 689,208.87, 951,108.79 and 383,278.53
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Solution
The fourth proportional to 689,208.87, 951,108.79 and 383,278.53 is: 528,924.68
Step by Step Solution
- Step 1: Write the proportion equation
689,208.87 : 951,108.79 = 383,278.53 : x - Step 2: Convert to fraction form
689,208.87/951,108.79 = 383,278.53/x - Step 3: Cross multiply
689,208.87x = 951,108.79 × 383,278.53 - Step 4: Simplify right side
689,208.87x = 364,539,582,463.51 - Step 5: Solve for x
x = 364,539,582,463.51/689,208.87 - Step 6: Final answer
x = 528,924.68
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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.