Home / 439,831.60-659,747.40-387,300.40

Finding the Fourth Proportional to 439,831.60, 659,747.40 and 387,300.40

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Solution

The fourth proportional to 439,831.60, 659,747.40 and 387,300.40 is: 580,950.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,831.60 : 659,747.40 = 387,300.40 : x
  2. Step 2: Convert to fraction form
    439,831.60/659,747.40 = 387,300.40/x
  3. Step 3: Cross multiply
    439,831.60x = 659,747.40 × 387,300.40
  4. Step 4: Simplify right side
    439,831.60x = 255,520,431,918.96
  5. Step 5: Solve for x
    x = 255,520,431,918.96/439,831.60
  6. Step 6: Final answer
    x = 580,950.60

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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.