Home / 638,808.40-956,219.19-470,518.75

Finding the Fourth Proportional to 638,808.40, 956,219.19 and 470,518.75

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Solution

The fourth proportional to 638,808.40, 956,219.19 and 470,518.75 is: 704,309.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,808.40 : 956,219.19 = 470,518.75 : x
  2. Step 2: Convert to fraction form
    638,808.40/956,219.19 = 470,518.75/x
  3. Step 3: Cross multiply
    638,808.40x = 956,219.19 × 470,518.75
  4. Step 4: Simplify right side
    638,808.40x = 449,919,058,004.81
  5. Step 5: Solve for x
    x = 449,919,058,004.81/638,808.40
  6. Step 6: Final answer
    x = 704,309.87

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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.