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Finding the Fourth Proportional to 617,967.90, 926,951.85 and 380,540.70

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Solution

The fourth proportional to 617,967.90, 926,951.85 and 380,540.70 is: 570,811.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,967.90 : 926,951.85 = 380,540.70 : x
  2. Step 2: Convert to fraction form
    617,967.90/926,951.85 = 380,540.70/x
  3. Step 3: Cross multiply
    617,967.90x = 926,951.85 × 380,540.70
  4. Step 4: Simplify right side
    617,967.90x = 352,742,905,865.30
  5. Step 5: Solve for x
    x = 352,742,905,865.30/617,967.90
  6. Step 6: Final answer
    x = 570,811.05

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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.