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Finding the Fourth Proportional to 520,044.40, 779,836.20 and 239,647.60

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Solution

The fourth proportional to 520,044.40, 779,836.20 and 239,647.60 is: 359,365.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,044.40 : 779,836.20 = 239,647.60 : x
  2. Step 2: Convert to fraction form
    520,044.40/779,836.20 = 239,647.60/x
  3. Step 3: Cross multiply
    520,044.40x = 779,836.20 × 239,647.60
  4. Step 4: Simplify right side
    520,044.40x = 186,885,873,723.12
  5. Step 5: Solve for x
    x = 186,885,873,723.12/520,044.40
  6. Step 6: Final answer
    x = 359,365.23

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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.