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Finding the Fourth Proportional to 635,749.60, 953,138.40 and 320,432.80

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Solution

The fourth proportional to 635,749.60, 953,138.40 and 320,432.80 is: 480,404.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,749.60 : 953,138.40 = 320,432.80 : x
  2. Step 2: Convert to fraction form
    635,749.60/953,138.40 = 320,432.80/x
  3. Step 3: Cross multiply
    635,749.60x = 953,138.40 × 320,432.80
  4. Step 4: Simplify right side
    635,749.60x = 305,416,806,299.52
  5. Step 5: Solve for x
    x = 305,416,806,299.52/635,749.60
  6. Step 6: Final answer
    x = 480,404.24

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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.