Finding the Fourth Proportional to 742,675.23, 1,024,931.48 and 420,457.23
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Solution
The fourth proportional to 742,675.23, 1,024,931.48 and 420,457.23 is: 580,253.43
Step by Step Solution
- Step 1: Write the proportion equation
742,675.23 : 1,024,931.48 = 420,457.23 : x - Step 2: Convert to fraction form
742,675.23/1,024,931.48 = 420,457.23/x - Step 3: Cross multiply
742,675.23x = 1,024,931.48 × 420,457.23 - Step 4: Simplify right side
742,675.23x = 430,939,848,918.31 - Step 5: Solve for x
x = 430,939,848,918.31/742,675.23 - Step 6: Final answer
x = 580,253.43
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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.