Home / 820,142.40-1,230,213.60-503,572.80

Finding the Fourth Proportional to 820,142.40, 1,230,213.60 and 503,572.80

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Solution

The fourth proportional to 820,142.40, 1,230,213.60 and 503,572.80 is: 755,359.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,142.40 : 1,230,213.60 = 503,572.80 : x
  2. Step 2: Convert to fraction form
    820,142.40/1,230,213.60 = 503,572.80/x
  3. Step 3: Cross multiply
    820,142.40x = 1,230,213.60 × 503,572.80
  4. Step 4: Simplify right side
    820,142.40x = 619,502,107,150.08
  5. Step 5: Solve for x
    x = 619,502,107,150.08/820,142.40
  6. Step 6: Final answer
    x = 755,359.20

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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.