Finding the Fourth Proportional to 391,175,404.80, 586,763,107.20 and 385,128,787.20
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Solution
The fourth proportional to 391,175,404.80, 586,763,107.20 and 385,128,787.20 is: 577,693,180.80
Step by Step Solution
- Step 1: Write the proportion equation
391,175,404.80 : 586,763,107.20 = 385,128,787.20 : x - Step 2: Convert to fraction form
391,175,404.80/586,763,107.20 = 385,128,787.20/x - Step 3: Cross multiply
391,175,404.80x = 586,763,107.20 × 385,128,787.20 - Step 4: Simplify right side
391,175,404.80x = 225,979,363,849,639,584 - Step 5: Solve for x
x = 225,979,363,849,639,584/391,175,404.80 - Step 6: Final answer
x = 577,693,180.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.