Finding the Fourth Proportional to 643,704.08, 888,312.12 and 357,224.36
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Solution
The fourth proportional to 643,704.08, 888,312.12 and 357,224.36 is: 492,969.89
Step by Step Solution
- Step 1: Write the proportion equation
643,704.08 : 888,312.12 = 357,224.36 : x - Step 2: Convert to fraction form
643,704.08/888,312.12 = 357,224.36/x - Step 3: Cross multiply
643,704.08x = 888,312.12 × 357,224.36 - Step 4: Simplify right side
643,704.08x = 317,326,728,547.24 - Step 5: Solve for x
x = 317,326,728,547.24/643,704.08 - Step 6: Final answer
x = 492,969.89
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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.