Home / 763,450.60-1,145,175.90-480,015.40

Finding the Fourth Proportional to 763,450.60, 1,145,175.90 and 480,015.40

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Solution

The fourth proportional to 763,450.60, 1,145,175.90 and 480,015.40 is: 720,023.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,450.60 : 1,145,175.90 = 480,015.40 : x
  2. Step 2: Convert to fraction form
    763,450.60/1,145,175.90 = 480,015.40/x
  3. Step 3: Cross multiply
    763,450.60x = 1,145,175.90 × 480,015.40
  4. Step 4: Simplify right side
    763,450.60x = 549,702,067,708.86
  5. Step 5: Solve for x
    x = 549,702,067,708.86/763,450.60
  6. Step 6: Final answer
    x = 720,023.10

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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.