Home / 656,923.15-906,489.81-381,238.13

Finding the Fourth Proportional to 656,923.15, 906,489.81 and 381,238.13

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Solution

The fourth proportional to 656,923.15, 906,489.81 and 381,238.13 is: 526,071.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,923.15 : 906,489.81 = 381,238.13 : x
  2. Step 2: Convert to fraction form
    656,923.15/906,489.81 = 381,238.13/x
  3. Step 3: Cross multiply
    656,923.15x = 906,489.81 × 381,238.13
  4. Step 4: Simplify right side
    656,923.15x = 345,588,476,123.44
  5. Step 5: Solve for x
    x = 345,588,476,123.44/656,923.15
  6. Step 6: Final answer
    x = 526,071.40

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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.