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Finding the Fourth Proportional to 571,255.74, 857,239.47 and 518,043.87

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Solution

The fourth proportional to 571,255.74, 857,239.47 and 518,043.87 is: 777,388.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,255.74 : 857,239.47 = 518,043.87 : x
  2. Step 2: Convert to fraction form
    571,255.74/857,239.47 = 518,043.87/x
  3. Step 3: Cross multiply
    571,255.74x = 857,239.47 × 518,043.87
  4. Step 4: Simplify right side
    571,255.74x = 444,087,652,555.55
  5. Step 5: Solve for x
    x = 444,087,652,555.55/571,255.74
  6. Step 6: Final answer
    x = 777,388.52

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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.