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Finding the Fourth Proportional to 539,469.40, 808,512.90 and 480,026.20

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Solution

The fourth proportional to 539,469.40, 808,512.90 and 480,026.20 is: 719,424.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,469.40 : 808,512.90 = 480,026.20 : x
  2. Step 2: Convert to fraction form
    539,469.40/808,512.90 = 480,026.20/x
  3. Step 3: Cross multiply
    539,469.40x = 808,512.90 × 480,026.20
  4. Step 4: Simplify right side
    539,469.40x = 388,107,375,037.98
  5. Step 5: Solve for x
    x = 388,107,375,037.98/539,469.40
  6. Step 6: Final answer
    x = 719,424.26

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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.