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Finding the Fourth Proportional to 662,421.20, 993,685.80 and 283,344.80

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Solution

The fourth proportional to 662,421.20, 993,685.80 and 283,344.80 is: 425,040.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,421.20 : 993,685.80 = 283,344.80 : x
  2. Step 2: Convert to fraction form
    662,421.20/993,685.80 = 283,344.80/x
  3. Step 3: Cross multiply
    662,421.20x = 993,685.80 × 283,344.80
  4. Step 4: Simplify right side
    662,421.20x = 281,555,704,263.84
  5. Step 5: Solve for x
    x = 281,555,704,263.84/662,421.20
  6. Step 6: Final answer
    x = 425,040.30

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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.