Finding the Fourth Proportional to 643,866.36, 888,534.06 and 357,389.88
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Solution
The fourth proportional to 643,866.36, 888,534.06 and 357,389.88 is: 493,197.19
Step by Step Solution
- Step 1: Write the proportion equation
643,866.36 : 888,534.06 = 357,389.88 : x - Step 2: Convert to fraction form
643,866.36/888,534.06 = 357,389.88/x - Step 3: Cross multiply
643,866.36x = 888,534.06 × 357,389.88 - Step 4: Simplify right side
643,866.36x = 317,553,081,079.31 - Step 5: Solve for x
x = 317,553,081,079.31/643,866.36 - Step 6: Final answer
x = 493,197.19
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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.