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Finding the Fourth Proportional to 524,962.40, 786,860.40 and 288,474.80

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Solution

The fourth proportional to 524,962.40, 786,860.40 and 288,474.80 is: 432,391.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,962.40 : 786,860.40 = 288,474.80 : x
  2. Step 2: Convert to fraction form
    524,962.40/786,860.40 = 288,474.80/x
  3. Step 3: Cross multiply
    524,962.40x = 786,860.40 × 288,474.80
  4. Step 4: Simplify right side
    524,962.40x = 226,989,396,517.92
  5. Step 5: Solve for x
    x = 226,989,396,517.92/524,962.40
  6. Step 6: Final answer
    x = 432,391.72

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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.