Finding the Fourth Proportional to 688,267.20, 949,642.56 and 401,623.68
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Solution
The fourth proportional to 688,267.20, 949,642.56 and 401,623.68 is: 554,143.71
Step by Step Solution
- Step 1: Write the proportion equation
688,267.20 : 949,642.56 = 401,623.68 : x - Step 2: Convert to fraction form
688,267.20/949,642.56 = 401,623.68/x - Step 3: Cross multiply
688,267.20x = 949,642.56 × 401,623.68 - Step 4: Simplify right side
688,267.20x = 381,398,939,631.82 - Step 5: Solve for x
x = 381,398,939,631.82/688,267.20 - Step 6: Final answer
x = 554,143.71
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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.