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Finding the Fourth Proportional to 615,491.20, 923,107.20 and 260,516.80

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Solution

The fourth proportional to 615,491.20, 923,107.20 and 260,516.80 is: 390,720.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,491.20 : 923,107.20 = 260,516.80 : x
  2. Step 2: Convert to fraction form
    615,491.20/923,107.20 = 260,516.80/x
  3. Step 3: Cross multiply
    615,491.20x = 923,107.20 × 260,516.80
  4. Step 4: Simplify right side
    615,491.20x = 240,484,933,800.96
  5. Step 5: Solve for x
    x = 240,484,933,800.96/615,491.20
  6. Step 6: Final answer
    x = 390,720.34

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1.5x scale

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.