Home / 679,810.60-1,019,715.90-325,516.60

Finding the Fourth Proportional to 679,810.60, 1,019,715.90 and 325,516.60

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Solution

The fourth proportional to 679,810.60, 1,019,715.90 and 325,516.60 is: 488,274.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,810.60 : 1,019,715.90 = 325,516.60 : x
  2. Step 2: Convert to fraction form
    679,810.60/1,019,715.90 = 325,516.60/x
  3. Step 3: Cross multiply
    679,810.60x = 1,019,715.90 × 325,516.60
  4. Step 4: Simplify right side
    679,810.60x = 331,934,452,733.94
  5. Step 5: Solve for x
    x = 331,934,452,733.94/679,810.60
  6. Step 6: Final answer
    x = 488,274.90

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Double scale
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Similar ratio
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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.