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Finding the Fourth Proportional to 640,676.52, 884,095.58 and 354,179.52

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Solution

The fourth proportional to 640,676.52, 884,095.58 and 354,179.52 is: 488,746.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,676.52 : 884,095.58 = 354,179.52 : x
  2. Step 2: Convert to fraction form
    640,676.52/884,095.58 = 354,179.52/x
  3. Step 3: Cross multiply
    640,676.52x = 884,095.58 × 354,179.52
  4. Step 4: Simplify right side
    640,676.52x = 313,128,549,043.97
  5. Step 5: Solve for x
    x = 313,128,549,043.97/640,676.52
  6. Step 6: Final answer
    x = 488,746.72

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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.