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Finding the Fourth Proportional to 519,881.60, 779,239.20 and 267,064.40

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Solution

The fourth proportional to 519,881.60, 779,239.20 and 267,064.40 is: 400,297.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,881.60 : 779,239.20 = 267,064.40 : x
  2. Step 2: Convert to fraction form
    519,881.60/779,239.20 = 267,064.40/x
  3. Step 3: Cross multiply
    519,881.60x = 779,239.20 × 267,064.40
  4. Step 4: Simplify right side
    519,881.60x = 208,107,049,404.48
  5. Step 5: Solve for x
    x = 208,107,049,404.48/519,881.60
  6. Step 6: Final answer
    x = 400,297.01

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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.