Home / 981,720.60-1,472,580.90-879,077.40

Finding the Fourth Proportional to 981,720.60, 1,472,580.90 and 879,077.40

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Solution

The fourth proportional to 981,720.60, 1,472,580.90 and 879,077.40 is: 1,318,616.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,720.60 : 1,472,580.90 = 879,077.40 : x
  2. Step 2: Convert to fraction form
    981,720.60/1,472,580.90 = 879,077.40/x
  3. Step 3: Cross multiply
    981,720.60x = 1,472,580.90 × 879,077.40
  4. Step 4: Simplify right side
    981,720.60x = 1,294,512,588,861.66
  5. Step 5: Solve for x
    x = 1,294,512,588,861.66/981,720.60
  6. Step 6: Final answer
    x = 1,318,616.10

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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.