Home / 858,795.24-1,286,230.90-409,831.40

Finding the Fourth Proportional to 858,795.24, 1,286,230.90 and 409,831.40

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Solution

The fourth proportional to 858,795.24, 1,286,230.90 and 409,831.40 is: 613,810.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,795.24 : 1,286,230.90 = 409,831.40 : x
  2. Step 2: Convert to fraction form
    858,795.24/1,286,230.90 = 409,831.40/x
  3. Step 3: Cross multiply
    858,795.24x = 1,286,230.90 × 409,831.40
  4. Step 4: Simplify right side
    858,795.24x = 527,137,810,470.26
  5. Step 5: Solve for x
    x = 527,137,810,470.26/858,795.24
  6. Step 6: Final answer
    x = 613,810.82

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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.