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Finding the Fourth Proportional to 570,309.78, 787,224.24 and 328,688.88

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Solution

The fourth proportional to 570,309.78, 787,224.24 and 328,688.88 is: 453,704.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,309.78 : 787,224.24 = 328,688.88 : x
  2. Step 2: Convert to fraction form
    570,309.78/787,224.24 = 328,688.88/x
  3. Step 3: Cross multiply
    570,309.78x = 787,224.24 × 328,688.88
  4. Step 4: Simplify right side
    570,309.78x = 258,751,853,754.45
  5. Step 5: Solve for x
    x = 258,751,853,754.45/570,309.78
  6. Step 6: Final answer
    x = 453,704.04

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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.