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Finding the Fourth Proportional to 613,698.24, 919,491.12 and 479,030.88

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Solution

The fourth proportional to 613,698.24, 919,491.12 and 479,030.88 is: 717,721.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,698.24 : 919,491.12 = 479,030.88 : x
  2. Step 2: Convert to fraction form
    613,698.24/919,491.12 = 479,030.88/x
  3. Step 3: Cross multiply
    613,698.24x = 919,491.12 × 479,030.88
  4. Step 4: Simplify right side
    613,698.24x = 440,464,640,365.79
  5. Step 5: Solve for x
    x = 440,464,640,365.79/613,698.24
  6. Step 6: Final answer
    x = 717,721.86

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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.