Home / 911,013.38-1,257,200.60-503,107.81

Finding the Fourth Proportional to 911,013.38, 1,257,200.60 and 503,107.81

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Solution

The fourth proportional to 911,013.38, 1,257,200.60 and 503,107.81 is: 694,289.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,013.38 : 1,257,200.60 = 503,107.81 : x
  2. Step 2: Convert to fraction form
    911,013.38/1,257,200.60 = 503,107.81/x
  3. Step 3: Cross multiply
    911,013.38x = 1,257,200.60 × 503,107.81
  4. Step 4: Simplify right side
    911,013.38x = 632,507,434,938.15
  5. Step 5: Solve for x
    x = 632,507,434,938.15/911,013.38
  6. Step 6: Final answer
    x = 694,289.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.