Finding the Fourth Proportional to 742,648.24, 1,024,855.80 and 403,116.40
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Solution
The fourth proportional to 742,648.24, 1,024,855.80 and 403,116.40 is: 556,301.30
Step by Step Solution
- Step 1: Write the proportion equation
742,648.24 : 1,024,855.80 = 403,116.40 : x - Step 2: Convert to fraction form
742,648.24/1,024,855.80 = 403,116.40/x - Step 3: Cross multiply
742,648.24x = 1,024,855.80 × 403,116.40 - Step 4: Simplify right side
742,648.24x = 413,136,180,615.12 - Step 5: Solve for x
x = 413,136,180,615.12/742,648.24 - Step 6: Final answer
x = 556,301.30
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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.