Finding the Fourth Proportional to 861,987.20, 1,292,379.68 and 381,953.92
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Solution
The fourth proportional to 861,987.20, 1,292,379.68 and 381,953.92 is: 572,664.52
Step by Step Solution
- Step 1: Write the proportion equation
861,987.20 : 1,292,379.68 = 381,953.92 : x - Step 2: Convert to fraction form
861,987.20/1,292,379.68 = 381,953.92/x - Step 3: Cross multiply
861,987.20x = 1,292,379.68 × 381,953.92 - Step 4: Simplify right side
861,987.20x = 493,629,484,904.35 - Step 5: Solve for x
x = 493,629,484,904.35/861,987.20 - Step 6: Final answer
x = 572,664.52
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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.