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Finding the Fourth Proportional to 607,512.21, 838,358.12 and 331,866.72

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Solution

The fourth proportional to 607,512.21, 838,358.12 and 331,866.72 is: 457,971.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,512.21 : 838,358.12 = 331,866.72 : x
  2. Step 2: Convert to fraction form
    607,512.21/838,358.12 = 331,866.72/x
  3. Step 3: Cross multiply
    607,512.21x = 838,358.12 × 331,866.72
  4. Step 4: Simplify right side
    607,512.21x = 278,223,157,810.43
  5. Step 5: Solve for x
    x = 278,223,157,810.43/607,512.21
  6. Step 6: Final answer
    x = 457,971.30

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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.