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Finding the Fourth Proportional to 437,574.20, 654,903.30 and 317,289.20

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Solution

The fourth proportional to 437,574.20, 654,903.30 and 317,289.20 is: 474,876.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,574.20 : 654,903.30 = 317,289.20 : x
  2. Step 2: Convert to fraction form
    437,574.20/654,903.30 = 317,289.20/x
  3. Step 3: Cross multiply
    437,574.20x = 654,903.30 × 317,289.20
  4. Step 4: Simplify right side
    437,574.20x = 207,793,744,134.36
  5. Step 5: Solve for x
    x = 207,793,744,134.36/437,574.20
  6. Step 6: Final answer
    x = 474,876.59

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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.