Finding the Fourth Proportional to 643,336.74, 963,479.68 and 509,787.59
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Solution
The fourth proportional to 643,336.74, 963,479.68 and 509,787.59 is: 763,472.61
Step by Step Solution
- Step 1: Write the proportion equation
643,336.74 : 963,479.68 = 509,787.59 : x - Step 2: Convert to fraction form
643,336.74/963,479.68 = 509,787.59/x - Step 3: Cross multiply
643,336.74x = 963,479.68 × 509,787.59 - Step 4: Simplify right side
643,336.74x = 491,169,977,989.30 - Step 5: Solve for x
x = 491,169,977,989.30/643,336.74 - Step 6: Final answer
x = 763,472.61
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.