Home / 639,823.27-882,977.90-378,402.67

Finding the Fourth Proportional to 639,823.27, 882,977.90 and 378,402.67

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Solution

The fourth proportional to 639,823.27, 882,977.90 and 378,402.67 is: 522,208.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,823.27 : 882,977.90 = 378,402.67 : x
  2. Step 2: Convert to fraction form
    639,823.27/882,977.90 = 378,402.67/x
  3. Step 3: Cross multiply
    639,823.27x = 882,977.90 × 378,402.67
  4. Step 4: Simplify right side
    639,823.27x = 334,121,197,315.48
  5. Step 5: Solve for x
    x = 334,121,197,315.48/639,823.27
  6. Step 6: Final answer
    x = 522,208.57

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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.