Finding the Fourth Proportional to 749,437.20, 1,034,247.96 and 409,905.45
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Solution
The fourth proportional to 749,437.20, 1,034,247.96 and 409,905.45 is: 565,682.99
Step by Step Solution
- Step 1: Write the proportion equation
749,437.20 : 1,034,247.96 = 409,905.45 : x - Step 2: Convert to fraction form
749,437.20/1,034,247.96 = 409,905.45/x - Step 3: Cross multiply
749,437.20x = 1,034,247.96 × 409,905.45 - Step 4: Simplify right side
749,437.20x = 423,943,875,455.38 - Step 5: Solve for x
x = 423,943,875,455.38/749,437.20 - Step 6: Final answer
x = 565,682.99
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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.