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Finding the Fourth Proportional to 387,074.40, 580,611.60 and 349,749.60

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Solution

The fourth proportional to 387,074.40, 580,611.60 and 349,749.60 is: 524,624.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,074.40 : 580,611.60 = 349,749.60 : x
  2. Step 2: Convert to fraction form
    387,074.40/580,611.60 = 349,749.60/x
  3. Step 3: Cross multiply
    387,074.40x = 580,611.60 × 349,749.60
  4. Step 4: Simplify right side
    387,074.40x = 203,068,674,855.36
  5. Step 5: Solve for x
    x = 203,068,674,855.36/387,074.40
  6. Step 6: Final answer
    x = 524,624.40

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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.