Finding the Fourth Proportional to 553,017,787.68, 763,187,731.92 and 318,068,513.76
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Solution
The fourth proportional to 553,017,787.68, 763,187,731.92 and 318,068,513.76 is: 438,947,883.81
Step by Step Solution
- Step 1: Write the proportion equation
553,017,787.68 : 763,187,731.92 = 318,068,513.76 : x - Step 2: Convert to fraction form
553,017,787.68/763,187,731.92 = 318,068,513.76/x - Step 3: Cross multiply
553,017,787.68x = 763,187,731.92 × 318,068,513.76 - Step 4: Simplify right side
553,017,787.68x = 242,745,987,611,659,680 - Step 5: Solve for x
x = 242,745,987,611,659,680/553,017,787.68 - Step 6: Final answer
x = 438,947,883.81
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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.