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Finding the Fourth Proportional to 611,004.60, 916,725.60 and 256,127.40

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Solution

The fourth proportional to 611,004.60, 916,725.60 and 256,127.40 is: 384,282.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,004.60 : 916,725.60 = 256,127.40 : x
  2. Step 2: Convert to fraction form
    611,004.60/916,725.60 = 256,127.40/x
  3. Step 3: Cross multiply
    611,004.60x = 916,725.60 × 256,127.40
  4. Step 4: Simplify right side
    611,004.60x = 234,798,544,441.44
  5. Step 5: Solve for x
    x = 234,798,544,441.44/611,004.60
  6. Step 6: Final answer
    x = 384,282.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.