Finding the Fourth Proportional to 740,394.79, 1,021,751.61 and 434,476.30
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Solution
The fourth proportional to 740,394.79, 1,021,751.61 and 434,476.30 is: 599,581.28
Step by Step Solution
- Step 1: Write the proportion equation
740,394.79 : 1,021,751.61 = 434,476.30 : x - Step 2: Convert to fraction form
740,394.79/1,021,751.61 = 434,476.30/x - Step 3: Cross multiply
740,394.79x = 1,021,751.61 × 434,476.30 - Step 4: Simplify right side
740,394.79x = 443,926,859,031.84 - Step 5: Solve for x
x = 443,926,859,031.84/740,394.79 - Step 6: Final answer
x = 599,581.28
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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.