Finding the Fourth Proportional to 643,565.40, 888,124.14 and 357,091.08
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Solution
The fourth proportional to 643,565.40, 888,124.14 and 357,091.08 is: 492,787.85
Step by Step Solution
- Step 1: Write the proportion equation
643,565.40 : 888,124.14 = 357,091.08 : x - Step 2: Convert to fraction form
643,565.40/888,124.14 = 357,091.08/x - Step 3: Cross multiply
643,565.40x = 888,124.14 × 357,091.08 - Step 4: Simplify right side
643,565.40x = 317,141,208,326.67 - Step 5: Solve for x
x = 317,141,208,326.67/643,565.40 - Step 6: Final answer
x = 492,787.85
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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.