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Finding the Fourth Proportional to 519,847.60, 779,188.20 and 267,030.40

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Solution

The fourth proportional to 519,847.60, 779,188.20 and 267,030.40 is: 400,246.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,847.60 : 779,188.20 = 267,030.40 : x
  2. Step 2: Convert to fraction form
    519,847.60/779,188.20 = 267,030.40/x
  3. Step 3: Cross multiply
    519,847.60x = 779,188.20 × 267,030.40
  4. Step 4: Simplify right side
    519,847.60x = 208,066,936,721.28
  5. Step 5: Solve for x
    x = 208,066,936,721.28/519,847.60
  6. Step 6: Final answer
    x = 400,246.03

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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.