Finding the Fourth Proportional to 643,703.04, 888,340.52 and 357,225.48
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Solution
The fourth proportional to 643,703.04, 888,340.52 and 357,225.48 is: 492,987.99
Step by Step Solution
- Step 1: Write the proportion equation
643,703.04 : 888,340.52 = 357,225.48 : x - Step 2: Convert to fraction form
643,703.04/888,340.52 = 357,225.48/x - Step 3: Cross multiply
643,703.04x = 888,340.52 × 357,225.48 - Step 4: Simplify right side
643,703.04x = 317,337,868,660.45 - Step 5: Solve for x
x = 317,337,868,660.45/643,703.04 - Step 6: Final answer
x = 492,987.99
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1.5x scale
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.