Home / 820,515.12-1,230,558.18-243,983.16

Finding the Fourth Proportional to 820,515.12, 1,230,558.18 and 243,983.16

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Solution

The fourth proportional to 820,515.12, 1,230,558.18 and 243,983.16 is: 365,910.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,515.12 : 1,230,558.18 = 243,983.16 : x
  2. Step 2: Convert to fraction form
    820,515.12/1,230,558.18 = 243,983.16/x
  3. Step 3: Cross multiply
    820,515.12x = 1,230,558.18 × 243,983.16
  4. Step 4: Simplify right side
    820,515.12x = 300,235,473,320.25
  5. Step 5: Solve for x
    x = 300,235,473,320.25/820,515.12
  6. Step 6: Final answer
    x = 365,910.96

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1.5x scale

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.