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Finding the Fourth Proportional to 570,137.32, 786,796.50 and 315,512.20

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Solution

The fourth proportional to 570,137.32, 786,796.50 and 315,512.20 is: 435,410.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,137.32 : 786,796.50 = 315,512.20 : x
  2. Step 2: Convert to fraction form
    570,137.32/786,796.50 = 315,512.20/x
  3. Step 3: Cross multiply
    570,137.32x = 786,796.50 × 315,512.20
  4. Step 4: Simplify right side
    570,137.32x = 248,243,894,667.30
  5. Step 5: Solve for x
    x = 248,243,894,667.30/570,137.32
  6. Step 6: Final answer
    x = 435,410.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.