Home / 938,638.48-1,407,335.58-339,520.72

Finding the Fourth Proportional to 938,638.48, 1,407,335.58 and 339,520.72

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Solution

The fourth proportional to 938,638.48, 1,407,335.58 and 339,520.72 is: 509,056.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,638.48 : 1,407,335.58 = 339,520.72 : x
  2. Step 2: Convert to fraction form
    938,638.48/1,407,335.58 = 339,520.72/x
  3. Step 3: Cross multiply
    938,638.48x = 1,407,335.58 × 339,520.72
  4. Step 4: Simplify right side
    938,638.48x = 477,819,589,403.22
  5. Step 5: Solve for x
    x = 477,819,589,403.22/938,638.48
  6. Step 6: Final answer
    x = 509,056.04

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Double scale
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Similar ratio
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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.