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Finding the Fourth Proportional to 983,475.20, 1,475,344.20 and 343,704.80

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Solution

The fourth proportional to 983,475.20, 1,475,344.20 and 343,704.80 is: 515,603.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    983,475.20 : 1,475,344.20 = 343,704.80 : x
  2. Step 2: Convert to fraction form
    983,475.20/1,475,344.20 = 343,704.80/x
  3. Step 3: Cross multiply
    983,475.20x = 1,475,344.20 × 343,704.80
  4. Step 4: Simplify right side
    983,475.20x = 507,082,883,192.16
  5. Step 5: Solve for x
    x = 507,082,883,192.16/983,475.20
  6. Step 6: Final answer
    x = 515,603.12

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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.