Home / 1,188,223.20-1,783,209.60-478,760.40

Finding the Fourth Proportional to 1,188,223.20, 1,783,209.60 and 478,760.40

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Solution

The fourth proportional to 1,188,223.20, 1,783,209.60 and 478,760.40 is: 718,493.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,223.20 : 1,783,209.60 = 478,760.40 : x
  2. Step 2: Convert to fraction form
    1,188,223.20/1,783,209.60 = 478,760.40/x
  3. Step 3: Cross multiply
    1,188,223.20x = 1,783,209.60 × 478,760.40
  4. Step 4: Simplify right side
    1,188,223.20x = 853,730,141,379.84
  5. Step 5: Solve for x
    x = 853,730,141,379.84/1,188,223.20
  6. Step 6: Final answer
    x = 718,493.08

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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.