Finding the Fourth Proportional to 808,215.12, 1,212,322.62 and 358,830.36
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Solution
The fourth proportional to 808,215.12, 1,212,322.62 and 358,830.36 is: 538,245.51
Step by Step Solution
- Step 1: Write the proportion equation
808,215.12 : 1,212,322.62 = 358,830.36 : x - Step 2: Convert to fraction form
808,215.12/1,212,322.62 = 358,830.36/x - Step 3: Cross multiply
808,215.12x = 1,212,322.62 × 358,830.36 - Step 4: Simplify right side
808,215.12x = 435,018,162,170.74 - Step 5: Solve for x
x = 435,018,162,170.74/808,215.12 - Step 6: Final answer
x = 538,245.51
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.