Home / 916,305.30-1,374,128.52-317,103.72

Finding the Fourth Proportional to 916,305.30, 1,374,128.52 and 317,103.72

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Solution

The fourth proportional to 916,305.30, 1,374,128.52 and 317,103.72 is: 475,541.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,305.30 : 1,374,128.52 = 317,103.72 : x
  2. Step 2: Convert to fraction form
    916,305.30/1,374,128.52 = 317,103.72/x
  3. Step 3: Cross multiply
    916,305.30x = 1,374,128.52 × 317,103.72
  4. Step 4: Simplify right side
    916,305.30x = 435,741,265,450.09
  5. Step 5: Solve for x
    x = 435,741,265,450.09/916,305.30
  6. Step 6: Final answer
    x = 475,541.57

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Double scale
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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.