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Finding the Fourth Proportional to 646,874.60, 970,311.90 and 366,938.60

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Solution

The fourth proportional to 646,874.60, 970,311.90 and 366,938.60 is: 550,407.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,874.60 : 970,311.90 = 366,938.60 : x
  2. Step 2: Convert to fraction form
    646,874.60/970,311.90 = 366,938.60/x
  3. Step 3: Cross multiply
    646,874.60x = 970,311.90 × 366,938.60
  4. Step 4: Simplify right side
    646,874.60x = 356,044,890,149.34
  5. Step 5: Solve for x
    x = 356,044,890,149.34/646,874.60
  6. Step 6: Final answer
    x = 550,407.90

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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.