Finding the Fourth Proportional to 868,972.80, 1,199,231.74 and 487,024.18
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Solution
The fourth proportional to 868,972.80, 1,199,231.74 and 487,024.18 is: 672,120.99
Step by Step Solution
- Step 1: Write the proportion equation
868,972.80 : 1,199,231.74 = 487,024.18 : x - Step 2: Convert to fraction form
868,972.80/1,199,231.74 = 487,024.18/x - Step 3: Cross multiply
868,972.80x = 1,199,231.74 × 487,024.18 - Step 4: Simplify right side
868,972.80x = 584,054,854,803.47 - Step 5: Solve for x
x = 584,054,854,803.47/868,972.80 - Step 6: Final answer
x = 672,120.99
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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.