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Finding the Fourth Proportional to 640,558, 883,963.56 and 354,064.24

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Solution

The fourth proportional to 640,558, 883,963.56 and 354,064.24 is: 488,605.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,558 : 883,963.56 = 354,064.24 : x
  2. Step 2: Convert to fraction form
    640,558/883,963.56 = 354,064.24/x
  3. Step 3: Cross multiply
    640,558x = 883,963.56 × 354,064.24
  4. Step 4: Simplify right side
    640,558x = 312,979,886,059.09
  5. Step 5: Solve for x
    x = 312,979,886,059.09/640,558
  6. Step 6: Final answer
    x = 488,605.07

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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.