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Finding the Fourth Proportional to 571,704.10, 788,913.21 and 317,045.86

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Solution

The fourth proportional to 571,704.10, 788,913.21 and 317,045.86 is: 437,501.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,704.10 : 788,913.21 = 317,045.86 : x
  2. Step 2: Convert to fraction form
    571,704.10/788,913.21 = 317,045.86/x
  3. Step 3: Cross multiply
    571,704.10x = 788,913.21 × 317,045.86
  4. Step 4: Simplify right side
    571,704.10x = 250,121,667,129.81
  5. Step 5: Solve for x
    x = 250,121,667,129.81/571,704.10
  6. Step 6: Final answer
    x = 437,501.96

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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.