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Finding the Fourth Proportional to 520,921.80, 783,053.10 and 483,942.60

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Solution

The fourth proportional to 520,921.80, 783,053.10 and 483,942.60 is: 727,465.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,921.80 : 783,053.10 = 483,942.60 : x
  2. Step 2: Convert to fraction form
    520,921.80/783,053.10 = 483,942.60/x
  3. Step 3: Cross multiply
    520,921.80x = 783,053.10 × 483,942.60
  4. Step 4: Simplify right side
    520,921.80x = 378,952,753,152.06
  5. Step 5: Solve for x
    x = 378,952,753,152.06/520,921.80
  6. Step 6: Final answer
    x = 727,465.72

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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.