Finding the Fourth Proportional to 687,864.80, 1,031,451.60 and 313,464.80
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Solution
The fourth proportional to 687,864.80, 1,031,451.60 and 313,464.80 is: 470,039.71
Step by Step Solution
- Step 1: Write the proportion equation
687,864.80 : 1,031,451.60 = 313,464.80 : x - Step 2: Convert to fraction form
687,864.80/1,031,451.60 = 313,464.80/x - Step 3: Cross multiply
687,864.80x = 1,031,451.60 × 313,464.80 - Step 4: Simplify right side
687,864.80x = 323,323,769,503.68 - Step 5: Solve for x
x = 323,323,769,503.68/687,864.80 - Step 6: Final answer
x = 470,039.71
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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.