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Finding the Fourth Proportional to 458,306.40, 687,459.60 and 436,533.60

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Solution

The fourth proportional to 458,306.40, 687,459.60 and 436,533.60 is: 654,800.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,306.40 : 687,459.60 = 436,533.60 : x
  2. Step 2: Convert to fraction form
    458,306.40/687,459.60 = 436,533.60/x
  3. Step 3: Cross multiply
    458,306.40x = 687,459.60 × 436,533.60
  4. Step 4: Simplify right side
    458,306.40x = 300,099,214,042.56
  5. Step 5: Solve for x
    x = 300,099,214,042.56/458,306.40
  6. Step 6: Final answer
    x = 654,800.40

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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.