Home / 787,520.40-1,181,863.80-521,192.40

Finding the Fourth Proportional to 787,520.40, 1,181,863.80 and 521,192.40

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Solution

The fourth proportional to 787,520.40, 1,181,863.80 and 521,192.40 is: 782,174.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,520.40 : 1,181,863.80 = 521,192.40 : x
  2. Step 2: Convert to fraction form
    787,520.40/1,181,863.80 = 521,192.40/x
  3. Step 3: Cross multiply
    787,520.40x = 1,181,863.80 × 521,192.40
  4. Step 4: Simplify right side
    787,520.40x = 615,978,430,395.12
  5. Step 5: Solve for x
    x = 615,978,430,395.12/787,520.40
  6. Step 6: Final answer
    x = 782,174.57

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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.