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Finding the Fourth Proportional to 520,983.60, 779,401.80 and 451,633.20

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Solution

The fourth proportional to 520,983.60, 779,401.80 and 451,633.20 is: 675,652.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,983.60 : 779,401.80 = 451,633.20 : x
  2. Step 2: Convert to fraction form
    520,983.60/779,401.80 = 451,633.20/x
  3. Step 3: Cross multiply
    520,983.60x = 779,401.80 × 451,633.20
  4. Step 4: Simplify right side
    520,983.60x = 352,003,729,019.76
  5. Step 5: Solve for x
    x = 352,003,729,019.76/520,983.60
  6. Step 6: Final answer
    x = 675,652.23

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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.