Home / 527,155.06-727,605.21-300,931.78

Finding the Fourth Proportional to 527,155.06, 727,605.21 and 300,931.78

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Solution

The fourth proportional to 527,155.06, 727,605.21 and 300,931.78 is: 415,360.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,155.06 : 727,605.21 = 300,931.78 : x
  2. Step 2: Convert to fraction form
    527,155.06/727,605.21 = 300,931.78/x
  3. Step 3: Cross multiply
    527,155.06x = 727,605.21 × 300,931.78
  4. Step 4: Simplify right side
    527,155.06x = 218,959,530,982.57
  5. Step 5: Solve for x
    x = 218,959,530,982.57/527,155.06
  6. Step 6: Final answer
    x = 415,360.77

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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.