Home / 639,423.20-882,399.21-352,943.21

Finding the Fourth Proportional to 639,423.20, 882,399.21 and 352,943.21

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Solution

The fourth proportional to 639,423.20, 882,399.21 and 352,943.21 is: 487,058.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,423.20 : 882,399.21 = 352,943.21 : x
  2. Step 2: Convert to fraction form
    639,423.20/882,399.21 = 352,943.21/x
  3. Step 3: Cross multiply
    639,423.20x = 882,399.21 × 352,943.21
  4. Step 4: Simplify right side
    639,423.20x = 311,436,809,678.86
  5. Step 5: Solve for x
    x = 311,436,809,678.86/639,423.20
  6. Step 6: Final answer
    x = 487,058.98

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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.