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Finding the Fourth Proportional to 400,793.40, 600,023.70 and 354,137.40

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Solution

The fourth proportional to 400,793.40, 600,023.70 and 354,137.40 is: 530,175.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,793.40 : 600,023.70 = 354,137.40 : x
  2. Step 2: Convert to fraction form
    400,793.40/600,023.70 = 354,137.40/x
  3. Step 3: Cross multiply
    400,793.40x = 600,023.70 × 354,137.40
  4. Step 4: Simplify right side
    400,793.40x = 212,490,833,056.38
  5. Step 5: Solve for x
    x = 212,490,833,056.38/400,793.40
  6. Step 6: Final answer
    x = 530,175.48

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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.