Home / 439,831.60-659,747.40-190,999.60

Finding the Fourth Proportional to 439,831.60, 659,747.40 and 190,999.60

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Solution

The fourth proportional to 439,831.60, 659,747.40 and 190,999.60 is: 286,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,831.60 : 659,747.40 = 190,999.60 : x
  2. Step 2: Convert to fraction form
    439,831.60/659,747.40 = 190,999.60/x
  3. Step 3: Cross multiply
    439,831.60x = 659,747.40 × 190,999.60
  4. Step 4: Simplify right side
    439,831.60x = 126,011,489,501.04
  5. Step 5: Solve for x
    x = 126,011,489,501.04/439,831.60
  6. Step 6: Final answer
    x = 286,499.40

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Double scale
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Similar ratio
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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.