Finding the Fourth Proportional to 685,989.08, 1,028,983.62 and 286,412.30
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Solution
The fourth proportional to 685,989.08, 1,028,983.62 and 286,412.30 is: 429,618.45
Step by Step Solution
- Step 1: Write the proportion equation
685,989.08 : 1,028,983.62 = 286,412.30 : x - Step 2: Convert to fraction form
685,989.08/1,028,983.62 = 286,412.30/x - Step 3: Cross multiply
685,989.08x = 1,028,983.62 × 286,412.30 - Step 4: Simplify right side
685,989.08x = 294,713,565,266.53 - Step 5: Solve for x
x = 294,713,565,266.53/685,989.08 - Step 6: Final answer
x = 429,618.45
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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.