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Finding the Fourth Proportional to 640,634.64, 884,058.60 and 350,234.64

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Solution

The fourth proportional to 640,634.64, 884,058.60 and 350,234.64 is: 483,314.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,634.64 : 884,058.60 = 350,234.64 : x
  2. Step 2: Convert to fraction form
    640,634.64/884,058.60 = 350,234.64/x
  3. Step 3: Cross multiply
    640,634.64x = 884,058.60 × 350,234.64
  4. Step 4: Simplify right side
    640,634.64x = 309,627,945,509.90
  5. Step 5: Solve for x
    x = 309,627,945,509.90/640,634.64
  6. Step 6: Final answer
    x = 483,314.40

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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.