Finding the Fourth Proportional to 814,390.79, 1,123,994.19 and 451,931.09
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Solution
The fourth proportional to 814,390.79, 1,123,994.19 and 451,931.09 is: 623,739.76
Step by Step Solution
- Step 1: Write the proportion equation
814,390.79 : 1,123,994.19 = 451,931.09 : x - Step 2: Convert to fraction form
814,390.79/1,123,994.19 = 451,931.09/x - Step 3: Cross multiply
814,390.79x = 1,123,994.19 × 451,931.09 - Step 4: Simplify right side
814,390.79x = 507,967,913,820.40 - Step 5: Solve for x
x = 507,967,913,820.40/814,390.79 - Step 6: Final answer
x = 623,739.76
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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.