Finding the Fourth Proportional to 643,951.18, 888,471.48 and 402,478.84
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Solution
The fourth proportional to 643,951.18, 888,471.48 and 402,478.84 is: 555,307.58
Step by Step Solution
- Step 1: Write the proportion equation
643,951.18 : 888,471.48 = 402,478.84 : x - Step 2: Convert to fraction form
643,951.18/888,471.48 = 402,478.84/x - Step 3: Cross multiply
643,951.18x = 888,471.48 × 402,478.84 - Step 4: Simplify right side
643,951.18x = 357,590,970,643.48 - Step 5: Solve for x
x = 357,590,970,643.48/643,951.18 - Step 6: Final answer
x = 555,307.58
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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.