Finding the Fourth Proportional to 438,637.80, 657,956.70 and 391,981.80
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Solution
The fourth proportional to 438,637.80, 657,956.70 and 391,981.80 is: 587,972.70
Step by Step Solution
- Step 1: Write the proportion equation
438,637.80 : 657,956.70 = 391,981.80 : x - Step 2: Convert to fraction form
438,637.80/657,956.70 = 391,981.80/x - Step 3: Cross multiply
438,637.80x = 657,956.70 × 391,981.80 - Step 4: Simplify right side
438,637.80x = 257,907,051,588.06 - Step 5: Solve for x
x = 257,907,051,588.06/438,637.80 - Step 6: Final answer
x = 587,972.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.