Home / 525,021.20-787,920.60-209,704.40

Finding the Fourth Proportional to 525,021.20, 787,920.60 and 209,704.40

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Solution

The fourth proportional to 525,021.20, 787,920.60 and 209,704.40 is: 314,711.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,021.20 : 787,920.60 = 209,704.40 : x
  2. Step 2: Convert to fraction form
    525,021.20/787,920.60 = 209,704.40/x
  3. Step 3: Cross multiply
    525,021.20x = 787,920.60 × 209,704.40
  4. Step 4: Simplify right side
    525,021.20x = 165,230,416,670.64
  5. Step 5: Solve for x
    x = 165,230,416,670.64/525,021.20
  6. Step 6: Final answer
    x = 314,711.89

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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.