Home / 858,128.60-1,286,609.70-325,569.80

Finding the Fourth Proportional to 858,128.60, 1,286,609.70 and 325,569.80

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Solution

The fourth proportional to 858,128.60, 1,286,609.70 and 325,569.80 is: 488,133.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,128.60 : 1,286,609.70 = 325,569.80 : x
  2. Step 2: Convert to fraction form
    858,128.60/1,286,609.70 = 325,569.80/x
  3. Step 3: Cross multiply
    858,128.60x = 1,286,609.70 × 325,569.80
  4. Step 4: Simplify right side
    858,128.60x = 418,881,262,707.06
  5. Step 5: Solve for x
    x = 418,881,262,707.06/858,128.60
  6. Step 6: Final answer
    x = 488,133.44

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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.