Finding the Fourth Proportional to 674,808.80, 1,011,565.20 and 390,207.20
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Solution
The fourth proportional to 674,808.80, 1,011,565.20 and 390,207.20 is: 584,936.09
Step by Step Solution
- Step 1: Write the proportion equation
674,808.80 : 1,011,565.20 = 390,207.20 : x - Step 2: Convert to fraction form
674,808.80/1,011,565.20 = 390,207.20/x - Step 3: Cross multiply
674,808.80x = 1,011,565.20 × 390,207.20 - Step 4: Simplify right side
674,808.80x = 394,720,024,309.44 - Step 5: Solve for x
x = 394,720,024,309.44/674,808.80 - Step 6: Final answer
x = 584,936.09
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.