Finding the Fourth Proportional to 572,743.08, 790,363.20 and 318,110.40
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Solution
The fourth proportional to 572,743.08, 790,363.20 and 318,110.40 is: 438,979.99
Step by Step Solution
- Step 1: Write the proportion equation
572,743.08 : 790,363.20 = 318,110.40 : x - Step 2: Convert to fraction form
572,743.08/790,363.20 = 318,110.40/x - Step 3: Cross multiply
572,743.08x = 790,363.20 × 318,110.40 - Step 4: Simplify right side
572,743.08x = 251,422,753,697.28 - Step 5: Solve for x
x = 251,422,753,697.28/572,743.08 - Step 6: Final answer
x = 438,979.99
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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.