Home / 715,785.60-1,073,512.32-316,208.40

Finding the Fourth Proportional to 715,785.60, 1,073,512.32 and 316,208.40

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Solution

The fourth proportional to 715,785.60, 1,073,512.32 and 316,208.40 is: 474,239.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,785.60 : 1,073,512.32 = 316,208.40 : x
  2. Step 2: Convert to fraction form
    715,785.60/1,073,512.32 = 316,208.40/x
  3. Step 3: Cross multiply
    715,785.60x = 1,073,512.32 × 316,208.40
  4. Step 4: Simplify right side
    715,785.60x = 339,453,613,087.49
  5. Step 5: Solve for x
    x = 339,453,613,087.49/715,785.60
  6. Step 6: Final answer
    x = 474,239.23

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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.