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Finding the Fourth Proportional to 633,703.40, 948,999.90 and 422,196.20

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Solution

The fourth proportional to 633,703.40, 948,999.90 and 422,196.20 is: 632,258.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,703.40 : 948,999.90 = 422,196.20 : x
  2. Step 2: Convert to fraction form
    633,703.40/948,999.90 = 422,196.20/x
  3. Step 3: Cross multiply
    633,703.40x = 948,999.90 × 422,196.20
  4. Step 4: Simplify right side
    633,703.40x = 400,664,151,580.38
  5. Step 5: Solve for x
    x = 400,664,151,580.38/633,703.40
  6. Step 6: Final answer
    x = 632,258.17

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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.