Home / 457,178.18-685,435.03-191,014.81

Finding the Fourth Proportional to 457,178.18, 685,435.03 and 191,014.81

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Solution

The fourth proportional to 457,178.18, 685,435.03 and 191,014.81 is: 286,383.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,178.18 : 685,435.03 = 191,014.81 : x
  2. Step 2: Convert to fraction form
    457,178.18/685,435.03 = 191,014.81/x
  3. Step 3: Cross multiply
    457,178.18x = 685,435.03 × 191,014.81
  4. Step 4: Simplify right side
    457,178.18x = 130,928,239,831.67
  5. Step 5: Solve for x
    x = 130,928,239,831.67/457,178.18
  6. Step 6: Final answer
    x = 286,383.40

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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.