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Finding the Fourth Proportional to 571,243.20, 856,864.80 and 480,004.80

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Solution

The fourth proportional to 571,243.20, 856,864.80 and 480,004.80 is: 720,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,243.20 : 856,864.80 = 480,004.80 : x
  2. Step 2: Convert to fraction form
    571,243.20/856,864.80 = 480,004.80/x
  3. Step 3: Cross multiply
    571,243.20x = 856,864.80 × 480,004.80
  4. Step 4: Simplify right side
    571,243.20x = 411,299,216,951.04
  5. Step 5: Solve for x
    x = 411,299,216,951.04/571,243.20
  6. Step 6: Final answer
    x = 720,007.20

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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.