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Finding the Fourth Proportional to 520,804.20, 779,932.28 and 470,317.30

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Solution

The fourth proportional to 520,804.20, 779,932.28 and 470,317.30 is: 704,325.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,804.20 : 779,932.28 = 470,317.30 : x
  2. Step 2: Convert to fraction form
    520,804.20/779,932.28 = 470,317.30/x
  3. Step 3: Cross multiply
    520,804.20x = 779,932.28 × 470,317.30
  4. Step 4: Simplify right side
    520,804.20x = 366,815,644,112.44
  5. Step 5: Solve for x
    x = 366,815,644,112.44/520,804.20
  6. Step 6: Final answer
    x = 704,325.43

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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.