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Finding the Fourth Proportional to 633,702.40, 948,998.40 and 422,195.20

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Solution

The fourth proportional to 633,702.40, 948,998.40 and 422,195.20 is: 632,256.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,702.40 : 948,998.40 = 422,195.20 : x
  2. Step 2: Convert to fraction form
    633,702.40/948,998.40 = 422,195.20/x
  3. Step 3: Cross multiply
    633,702.40x = 948,998.40 × 422,195.20
  4. Step 4: Simplify right side
    633,702.40x = 400,662,569,287.68
  5. Step 5: Solve for x
    x = 400,662,569,287.68/633,702.40
  6. Step 6: Final answer
    x = 632,256.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.