Finding the Fourth Proportional to 527,409.41, 727,809.99 and 309,614.58
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Solution
The fourth proportional to 527,409.41, 727,809.99 and 309,614.58 is: 427,259.32
Step by Step Solution
- Step 1: Write the proportion equation
527,409.41 : 727,809.99 = 309,614.58 : x - Step 2: Convert to fraction form
527,409.41/727,809.99 = 309,614.58/x - Step 3: Cross multiply
527,409.41x = 727,809.99 × 309,614.58 - Step 4: Simplify right side
527,409.41x = 225,340,584,373.65 - Step 5: Solve for x
x = 225,340,584,373.65/527,409.41 - Step 6: Final answer
x = 427,259.32
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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.