Finding the Fourth Proportional to 991,006.48, 1,486,730.80 and 317,128.26
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Solution
The fourth proportional to 991,006.48, 1,486,730.80 and 317,128.26 is: 475,763.14
Step by Step Solution
- Step 1: Write the proportion equation
991,006.48 : 1,486,730.80 = 317,128.26 : x - Step 2: Convert to fraction form
991,006.48/1,486,730.80 = 317,128.26/x - Step 3: Cross multiply
991,006.48x = 1,486,730.80 × 317,128.26 - Step 4: Simplify right side
991,006.48x = 471,484,357,664.06 - Step 5: Solve for x
x = 471,484,357,664.06/991,006.48 - Step 6: Final answer
x = 475,763.14
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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.