Home / 654,441.15-903,289.10-400,005.57

Finding the Fourth Proportional to 654,441.15, 903,289.10 and 400,005.57

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Solution

The fourth proportional to 654,441.15, 903,289.10 and 400,005.57 is: 552,105.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,441.15 : 903,289.10 = 400,005.57 : x
  2. Step 2: Convert to fraction form
    654,441.15/903,289.10 = 400,005.57/x
  3. Step 3: Cross multiply
    654,441.15x = 903,289.10 × 400,005.57
  4. Step 4: Simplify right side
    654,441.15x = 361,320,669,320.26
  5. Step 5: Solve for x
    x = 361,320,669,320.26/654,441.15
  6. Step 6: Final answer
    x = 552,105.67

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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.