Finding the Fourth Proportional to 657,630.09, 907,432.17 and 399,372.42
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Solution
The fourth proportional to 657,630.09, 907,432.17 and 399,372.42 is: 551,074.82
Step by Step Solution
- Step 1: Write the proportion equation
657,630.09 : 907,432.17 = 399,372.42 : x - Step 2: Convert to fraction form
657,630.09/907,432.17 = 399,372.42/x - Step 3: Cross multiply
657,630.09x = 907,432.17 × 399,372.42 - Step 4: Simplify right side
657,630.09x = 362,403,383,623.98 - Step 5: Solve for x
x = 362,403,383,623.98/657,630.09 - Step 6: Final answer
x = 551,074.82
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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.