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Finding the Fourth Proportional to 507,893.79, 700,899.12 and 290,131.29

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Solution

The fourth proportional to 507,893.79, 700,899.12 and 290,131.29 is: 400,384.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,893.79 : 700,899.12 = 290,131.29 : x
  2. Step 2: Convert to fraction form
    507,893.79/700,899.12 = 290,131.29/x
  3. Step 3: Cross multiply
    507,893.79x = 700,899.12 × 290,131.29
  4. Step 4: Simplify right side
    507,893.79x = 203,352,765,845.47
  5. Step 5: Solve for x
    x = 203,352,765,845.47/507,893.79
  6. Step 6: Final answer
    x = 400,384.43

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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.