Home / 820,171.20-1,230,256.80-503,601.60

Finding the Fourth Proportional to 820,171.20, 1,230,256.80 and 503,601.60

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Solution

The fourth proportional to 820,171.20, 1,230,256.80 and 503,601.60 is: 755,402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,171.20 : 1,230,256.80 = 503,601.60 : x
  2. Step 2: Convert to fraction form
    820,171.20/1,230,256.80 = 503,601.60/x
  3. Step 3: Cross multiply
    820,171.20x = 1,230,256.80 × 503,601.60
  4. Step 4: Simplify right side
    820,171.20x = 619,559,292,890.88
  5. Step 5: Solve for x
    x = 619,559,292,890.88/820,171.20
  6. Step 6: Final answer
    x = 755,402.40

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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.