Home / 659,867.81-989,789.56-210,585.11

Finding the Fourth Proportional to 659,867.81, 989,789.56 and 210,585.11

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Solution

The fourth proportional to 659,867.81, 989,789.56 and 210,585.11 is: 315,873.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,867.81 : 989,789.56 = 210,585.11 : x
  2. Step 2: Convert to fraction form
    659,867.81/989,789.56 = 210,585.11/x
  3. Step 3: Cross multiply
    659,867.81x = 989,789.56 × 210,585.11
  4. Step 4: Simplify right side
    659,867.81x = 208,434,937,894.04
  5. Step 5: Solve for x
    x = 208,434,937,894.04/659,867.81
  6. Step 6: Final answer
    x = 315,873.78

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Double scale
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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.