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Finding the Fourth Proportional to 520,033.40, 779,819.70 and 239,636.60

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Solution

The fourth proportional to 520,033.40, 779,819.70 and 239,636.60 is: 359,348.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,033.40 : 779,819.70 = 239,636.60 : x
  2. Step 2: Convert to fraction form
    520,033.40/779,819.70 = 239,636.60/x
  3. Step 3: Cross multiply
    520,033.40x = 779,819.70 × 239,636.60
  4. Step 4: Simplify right side
    520,033.40x = 186,873,341,521.02
  5. Step 5: Solve for x
    x = 186,873,341,521.02/520,033.40
  6. Step 6: Final answer
    x = 359,348.73

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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.