Finding the Fourth Proportional to 509,385.08, 764,103.78 and 130,309.09
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Solution
The fourth proportional to 509,385.08, 764,103.78 and 130,309.09 is: 195,470.32
Step by Step Solution
- Step 1: Write the proportion equation
509,385.08 : 764,103.78 = 130,309.09 : x - Step 2: Convert to fraction form
509,385.08/764,103.78 = 130,309.09/x - Step 3: Cross multiply
509,385.08x = 764,103.78 × 130,309.09 - Step 4: Simplify right side
509,385.08x = 99,569,666,327.10 - Step 5: Solve for x
x = 99,569,666,327.10/509,385.08 - Step 6: Final answer
x = 195,470.32
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1.5x scale
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.