Finding the Fourth Proportional to 572,791.92, 790,430.88 and 318,159.36
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Solution
The fourth proportional to 572,791.92, 790,430.88 and 318,159.36 is: 439,047.71
Step by Step Solution
- Step 1: Write the proportion equation
572,791.92 : 790,430.88 = 318,159.36 : x - Step 2: Convert to fraction form
572,791.92/790,430.88 = 318,159.36/x - Step 3: Cross multiply
572,791.92x = 790,430.88 × 318,159.36 - Step 4: Simplify right side
572,791.92x = 251,482,982,905.04 - Step 5: Solve for x
x = 251,482,982,905.04/572,791.92 - Step 6: Final answer
x = 439,047.71
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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.