Home / 526,272.40-789,408.60-421,296.40

Finding the Fourth Proportional to 526,272.40, 789,408.60 and 421,296.40

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Solution

The fourth proportional to 526,272.40, 789,408.60 and 421,296.40 is: 631,944.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,272.40 : 789,408.60 = 421,296.40 : x
  2. Step 2: Convert to fraction form
    526,272.40/789,408.60 = 421,296.40/x
  3. Step 3: Cross multiply
    526,272.40x = 789,408.60 × 421,296.40
  4. Step 4: Simplify right side
    526,272.40x = 332,575,001,309.04
  5. Step 5: Solve for x
    x = 332,575,001,309.04/526,272.40
  6. Step 6: Final answer
    x = 631,944.60

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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.