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Finding the Fourth Proportional to 507,791.40, 700,760.90 and 278,333.40

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Solution

The fourth proportional to 507,791.40, 700,760.90 and 278,333.40 is: 384,104.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,791.40 : 700,760.90 = 278,333.40 : x
  2. Step 2: Convert to fraction form
    507,791.40/700,760.90 = 278,333.40/x
  3. Step 3: Cross multiply
    507,791.40x = 700,760.90 × 278,333.40
  4. Step 4: Simplify right side
    507,791.40x = 195,045,163,884.06
  5. Step 5: Solve for x
    x = 195,045,163,884.06/507,791.40
  6. Step 6: Final answer
    x = 384,104.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.