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Finding the Fourth Proportional to 689,282.60, 951,201.50 and 387,476.60

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Solution

The fourth proportional to 689,282.60, 951,201.50 and 387,476.60 is: 534,712.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,282.60 : 951,201.50 = 387,476.60 : x
  2. Step 2: Convert to fraction form
    689,282.60/951,201.50 = 387,476.60/x
  3. Step 3: Cross multiply
    689,282.60x = 951,201.50 × 387,476.60
  4. Step 4: Simplify right side
    689,282.60x = 368,568,316,441.51
  5. Step 5: Solve for x
    x = 368,568,316,441.51/689,282.60
  6. Step 6: Final answer
    x = 534,712.93

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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.