Finding the Fourth Proportional to 708,643.62, 977,891.13 and 402,679.08
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Solution
The fourth proportional to 708,643.62, 977,891.13 and 402,679.08 is: 555,676.07
Step by Step Solution
- Step 1: Write the proportion equation
708,643.62 : 977,891.13 = 402,679.08 : x - Step 2: Convert to fraction form
708,643.62/977,891.13 = 402,679.08/x - Step 3: Cross multiply
708,643.62x = 977,891.13 × 402,679.08 - Step 4: Simplify right side
708,643.62x = 393,776,300,568.56 - Step 5: Solve for x
x = 393,776,300,568.56/708,643.62 - Step 6: Final answer
x = 555,676.07
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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.