Finding the Fourth Proportional to 643,768.12, 888,358.62 and 357,288.40
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Solution
The fourth proportional to 643,768.12, 888,358.62 and 357,288.40 is: 493,035.02
Step by Step Solution
- Step 1: Write the proportion equation
643,768.12 : 888,358.62 = 357,288.40 : x - Step 2: Convert to fraction form
643,768.12/888,358.62 = 357,288.40/x - Step 3: Cross multiply
643,768.12x = 888,358.62 × 357,288.40 - Step 4: Simplify right side
643,768.12x = 317,400,229,966.01 - Step 5: Solve for x
x = 317,400,229,966.01/643,768.12 - Step 6: Final answer
x = 493,035.02
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.