Home / 905,785.28-1,358,708.16-407,150.72

Finding the Fourth Proportional to 905,785.28, 1,358,708.16 and 407,150.72

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Solution

The fourth proportional to 905,785.28, 1,358,708.16 and 407,150.72 is: 610,739.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,785.28 : 1,358,708.16 = 407,150.72 : x
  2. Step 2: Convert to fraction form
    905,785.28/1,358,708.16 = 407,150.72/x
  3. Step 3: Cross multiply
    905,785.28x = 1,358,708.16 × 407,150.72
  4. Step 4: Simplify right side
    905,785.28x = 553,199,005,613.88
  5. Step 5: Solve for x
    x = 553,199,005,613.88/905,785.28
  6. Step 6: Final answer
    x = 610,739.67

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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.