Finding the Fourth Proportional to 643,769.62, 888,360.69 and 357,289.90
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Solution
The fourth proportional to 643,769.62, 888,360.69 and 357,289.90 is: 493,037.09
Step by Step Solution
- Step 1: Write the proportion equation
643,769.62 : 888,360.69 = 357,289.90 : x - Step 2: Convert to fraction form
643,769.62/888,360.69 = 357,289.90/x - Step 3: Cross multiply
643,769.62x = 888,360.69 × 357,289.90 - Step 4: Simplify right side
643,769.62x = 317,402,302,094.03 - Step 5: Solve for x
x = 317,402,302,094.03/643,769.62 - Step 6: Final answer
x = 493,037.09
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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.