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Finding the Fourth Proportional to 400,522.80, 600,707.70 and 120,040.02

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Solution

The fourth proportional to 400,522.80, 600,707.70 and 120,040.02 is: 180,037.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,522.80 : 600,707.70 = 120,040.02 : x
  2. Step 2: Convert to fraction form
    400,522.80/600,707.70 = 120,040.02/x
  3. Step 3: Cross multiply
    400,522.80x = 600,707.70 × 120,040.02
  4. Step 4: Simplify right side
    400,522.80x = 72,108,964,322.15
  5. Step 5: Solve for x
    x = 72,108,964,322.15/400,522.80
  6. Step 6: Final answer
    x = 180,037.10

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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.