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Finding the Fourth Proportional to 497,715.20, 746,572.80 and 385,740.80

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Solution

The fourth proportional to 497,715.20, 746,572.80 and 385,740.80 is: 578,611.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,715.20 : 746,572.80 = 385,740.80 : x
  2. Step 2: Convert to fraction form
    497,715.20/746,572.80 = 385,740.80/x
  3. Step 3: Cross multiply
    497,715.20x = 746,572.80 × 385,740.80
  4. Step 4: Simplify right side
    497,715.20x = 287,983,589,130.24
  5. Step 5: Solve for x
    x = 287,983,589,130.24/497,715.20
  6. Step 6: Final answer
    x = 578,611.20

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Similar ratio
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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.